both
match
either
dual
bipersonal
partner
conjoint
conjoined
chemistry
interpersonal chemistry
alchemy
latter
twin
duplet
contrast
interrelationship
chiastic
one
his and hers
relation
singular
pendant
all and sundry
in pairs
pair
two-handed
doublet
twosome
one-on-one
apposition
biune
transnumeral
-ton
duo
brace
duad
couplet
twain
yoke
dyad
duet
distich
two sides of the same coin
span
opposite
meron
couple
opposite number
vis-a-vis
bothridial
counterpart
former
thing
up
apiece
binominal
several
each other
amalgam
alternative
paradox
mate
reciprocal
agenda item
fellow
mutual
binary
interreference
chicken-or-egg question
two-part
reciprocity
tandem
multi-
two-way
one another
bipartite
pairing
plural
two of a kind
duplicant
coinvention
comparate
bipersonal
conjoint
conjoined
latter
chiastic
his and hers
singular
two-handed
twosome
one-on-one
biune
transnumeral
opposite
bothridial
former
both
up
several
binominal
reciprocal
mutual
binary
two-part
two-way
bipartite
dual
twin
plural
apiece
match
dual
partner
chemistry
interpersonal chemistry
alchemy
twin
duplet
contrast
interrelationship
relation
pendant
pair
doublet
twosome
apposition
duo
brace
duad
couplet
twain
yoke
dyad
duet
distich
two sides of the same coin
span
meron
couple
opposite number
vis-a-vis
counterpart
thing
binominal
amalgam
alternative
paradox
mate
agenda item
fellow
interreference
chicken-or-egg question
reciprocity
tandem
pairing
two of a kind
duplicant
coinvention
comparate
match
twin
pair
couple
mate
noun
- A pair of items or entities with mutually suitable characteristics.
- A device made of wood or paper, at the tip coated with chemicals that ignite with the friction of being dragged (struck) against a rough dry surface.
- Any contest or trial of strength or skill, or to determine superiority.
- Equality of conditions in contest or competition.
- A candidate for matrimony; one to be gained in marriage.
- A competitive sporting event such as a boxing meet, a baseball game, or a cricket match.
- Equivalence; a state of correspondence.
- A marriage.
- Suitability.
- An agreement or compact.
- A perforated board, block of plaster, hardened sand, etc., in which a pattern is partly embedded when a mould is made, for giving shape to the surfaces of separation between the parts of the mould.
- Someone with a measure of an attribute equaling or exceeding the object of comparison.
verb
- To make a successful match or pairing.
- To agree; to be equal; to correspond.
- To equal or exceed in achievement.
- To agree with; to be equal to; to correspond to.
- To fit together, or make suitable for fitting together; specifically, to furnish with a tongue and groove at the edges.
- To be an example of a rule or regex.
noun
- Of an item that is one of a pair, the other item in the pair.
- Of a vector in an inner product space, the linear functional corresponding to taking the inner product with that vector. The set of all duals is a vector space called the dual space.
- The dual number.
- Of a regular polyhedron with V vertices and F faces, the regular polyhedron having F vertices and V faces.
adj
- Pertaining to two, pertaining to a pair of.
- Characterized by having two (usually equivalent) components.
- Pertaining to a grammatical number in certain languages that refers to two of something, such as a pair of shoes.
- Exhibiting duality.
- Being the dual of some other category; containing the same objects but with source and target reversed for all morphisms.
- Being the space of all linear functionals of (some other space).
verb
noun
- One of each halves of a pair of someone or something that belongs together.
- A spouse or other person with whom one shares a domestic, romantic or sexual bond.
- Someone with whom one plays on the same side in a game, such as card games or doubles tennis.
- Someone with whom one dances in a two-person dance.
- One of the pieces of wood comprising the framework which strengthens the deck of a wooden ship around the holes through which the mast and other fittings pass.
- A group financial arrangement in which each member contributes a set amount of money over a set period.
- A member of a business or law partnership.
verb
noun
- Either of two similar or closely related objects, entities etc.
- A twin size mattress or a bed designed for such a mattress.
- A room in a hotel, guesthouse, etc. with two beds; a twin room.
- A twin crystal.
- A two-engine aircraft.
- Either of two people (or, less commonly, animals) who shared the same uterus at the same time; one who was born at the same birth as a sibling.
verb
- To split, part; to go away, depart.
- To separate, divide.
- To join, unite; to form links between (now especially of two places in different countries); to pair with.
- To be, or be like, a pair of twins (for example, to dress identically); to be paired or suited.
- To give birth to twins.
- To be, or be like, a twin to (someone else); to match in some way.
adj
noun
- A difference between two objects, people or concepts.
- Something that is opposite of or strikingly different from something else.
- A control on a television, etc, that adjusts the amount of contrast in the images being displayed.
- Antithesis.
- is a substance used to increase the contrast of structures or fluids within the body in medical imaging.
- The degree of this difference.
verb
pron
- The first mentioned of two things or people, as opposed to the other.
- Functions as a relative pronoun at the end of a relative clause.
- Any person (applying to people in general).
- One thing (among a group of others); one member of a group.
- Any person, entity or thing.
- Used as a noun substituent following a possessive determiner.
particle
- Used to emphasize or explain something, with an implied antecedent.
- Used at the end of a sentence to highlight the characteristics of someone or something.
- A nominalizer; used to form a noun phrase without a head noun.
num
- The cardinality of the smallest nonempty set.
- The first positive number in the set of natural numbers.
- The number represented by the Arabic numeral 1; the numerical value equal to that cardinal number.
- The ordinality of an element which has no predecessor, usually called first or number one.
adj
- Whole, entire.
- Being an unknown person with the specified name; see also "a certain".
- The same.
- In agreement.
- Being a preeminent example.
- Sole, only.
- Being a single, unspecified thing; a; any.
- Of a period of time, being particular.
noun
- One run scored by hitting the ball and running between the wickets; a single.
- A joke or amusing anecdote.
- A particularly special or compatible person or thing.
- A one-dollar bill.
- Used instead of ! to amplify an exclamation, parodying unskilled typists who forget to press the shift key while typing exclamation points, thus typing "1".
- The neutral element with respect to multiplication in a ring.
- One o'clock, either a.m. or p.m.
- The digit or figure 1.
verb
noun
- The manner in which two things may be associated.
- A set of ordered tuples.
- A set of ordered tuples retrievable by a relational database; a table.
- The act of intercourse.
- Specifically, a set of ordered pairs; a binary relation.
- The act of relating a story.
- A member of one's extended family; a relative.
- A statement of equality of two products of generators, used in the presentation of a group.
- A subobject of a product of objects.
adj
- Each; individual.
- Being the only one of the kind; unique.
- Referring to only one thing or person.
- Distinguished by superiority: peerless, unmatched, eminent, exceptional, extraordinary.
- Having the property that the matrix of coefficients of the new variables has a determinant equal to zero.
- Out of the ordinary; curious.
- Being only one of a larger population.
- Not equal to its own cofinality.
- Having no inverse.
noun
noun
- One of a pair; a counterpart.
- A short rope hanging down, used to attach hooks for tackles; a pennant.
- A lamp hanging from the roof.
- A piece of jewellery which hangs down as an ornament, especially worn on a chain around the neck.
- A long narrow flag at the head of the principal mast in a royal ship.
- The dangling part of an earring.
- An ornament of wood or of stone hanging downwards from a roof.
- A supporting post attached to the main rafter.
- The stem and ring of a watch, by which it is suspended.
pron
prep_phrase
noun
- One of the constituent items that make up a pair.
- A couple of working animals attached to work together, as by a yoke.
- A boat for two sweep rowers.
- A score of zero runs (a duck) in both innings of a two-innings match.
- Used with binary nouns (often in the plural to indicate multiple instances, since such nouns are plural only, except in some technical contexts)
- A double play, two outs recorded in one play.
- The exclusion of one member of a parliamentary party from a vote, if a member of the other party is absent for important personal reasons.
- Two similar or identical things taken together; often followed by of.
- Two members of opposite parties or opinion, as in a parliamentary body, who mutually agree not to vote on a given question, or on issues of a party nature during a specified time.
- In a mechanism, two elements, or bodies, which are so applied to each other as to mutually constrain relative motion; named in accordance with the motion it permits, as in turning pair, sliding pair, twisting pair.
- A doubleheader, two games played on the same day between the same teams
- A poker hand that contains two cards of identical rank, which cannot also count as a better hand.
- A pair of breasts
- A pair of testicles
- Two people in a relationship, partnership or friendship.
verb
- To engage (oneself) with another of opposite opinions not to vote on a particular question or class of questions.
- To group into one or more sets of two.
- To bring two (animals, notably dogs) together for mating.
- To suit; to fit, as a counterpart.
- To come together for mating.
- to link two electronic devices wirelessly together, especially through a protocol such as Bluetooth
noun
- A pair of two similar or equal things; couple.
- A very small flowering plant, Dimeresia howellii.
- Either of two dice, each of which, when thrown, has the same number of spots on the face lying uppermost.
- A man’s waistcoat.
- A man’s close-fitting jacket, with or without sleeves, worn by European men from the 1400s to the 1600s.
- A word (or rather, a halfword) consisting of two bytes.
- One of two or more different words in a language derived from the same etymological root but having different phonological forms (e.g., toucher and toquer in French or shade and shadow in English).
- An imitation gem made of two pieces of glass or crystal with a layer of color between them.
- A quantum state of a system with a spin of ½, such that there are two allowed values of the spin component, −½ and +½.
- In textual criticism, two different narrative accounts of the same actual event.
- A word or phrase set a second time by mistake.
- A word ladder puzzle.
- An arrangement of two lenses for a microscope, designed to correct spherical aberration and chromatic dispersion, thus rendering the image of an object more clear and distinct.
- Dipole antenna.
noun
- A placing of two things side by side, or the fitting together of two things.
- A public disputation by scholars.
- The growth of successive layers of a cell wall.
- Appositio, the addition of an element not syntactically required.
- The relationship between such nouns or noun phrases.
- The quality of being side-by-side, apposed instead of being opposed, not being front-to-front but next to each other.
- A construction in which one noun or noun phrase is placed with another as an explanatory equivalent, both of them having the same syntactic function in the sentence.
- A (now purely ceremonial) speech day at St Paul's School, London.
noun
- two items of the same kind
- a support that steadies or strengthens something else
- a set of two similar things considered as a unit
- either of two punctuation marks ({ or }) used to enclose textual material
- a rope on a square-rigged ship that is used to swing a yard about and secure it
- elastic straps that hold trousers up
- an appliance that corrects dental irregularities
- a carpenter's tool having a crank handle for turning and a socket to hold a bit for boring
- a structural member used to stiffen a framework
verb
noun
- two items of the same kind
- fabric comprising a fitted part at the top of a garment
- an oppressive power
- a pair of draft animals joined by a yoke
- support consisting of a wooden frame across the shoulders that enables a person to carry buckets hanging from each end
- a connection (like a clamp or vise) between two things so they move together
- stable gear that joins two draft animals at the neck so they can work together as a team
verb
noun
- two items of the same kind
- the complete duration of something
- the distance or interval between two points
- a unit of length based on the width of the expanded human hand (usually taken as 9 inches)
- a structure that allows people or vehicles to cross an obstacle such as a river or canal or railway etc.
- the act of sitting or standing astride
verb
adj
- Of either of two complementary or mutually exclusive things.
- Facing in the other direction.
- Of leaves and flowers, positioned directly across from each other on a stem.
- Located directly across from something else, or from each other.
- Extremely different; inconsistent; contrary; repugnant; antagonistic.
prep
adv
noun
noun
- An individual object or distinct entity.
- A public assembly or judicial council in a Germanic country.
- A unit or container, usually containing edible goods.
- A problem, dilemma, or complicating factor.
- Corporeal object.
- That which is considered to exist as a separate entity, object, quality or concept.
- A romantic relationship.
- Alternate form of ting.
- One's typical routine, habits, or manner. (Used in possessive constructions.)
- Used after a noun to refer dismissively to the situation surrounding the noun's referent.
- A genuine concept, entity or phenomenon; something that actually exists (often contrary to expectation or belief).
- That which is favoured; personal preference. (Used in possessive constructions.)
- A living being or creature.
- A penis.
- Whatever can be owned.
- Girl; attractive woman.
- Clothes, possessions or equipment.
- That which matters; the crux.
- A romantic couple.
- A word, symbol, sign, or other referent that can be used to refer to any entity.
verb
adj
- Said of the higher-ranking pair in a two pair.
- Traveling towards a major terminus.
- At university (especially Oxford or Cambridge).
- Aloft.
- Larger; greater in quantity, volume, value etc.
- Functional; working.
- Raised; lifted.
- Above the horizon, in the sky.
- well-known; renowned
- Awake and out of bed.
- Willing; ready.
- Indicating a larger or higher quantity.
- Headed or designated to go upward (as an escalator, stairway, elevator etc.) or toward (as a run-up).
- Finished, to an end
- On or at a physically higher level.
- Chilled and served without ice.
- Erect.
- Ahead; leading; winning.
- Happening; new; of concern. See also what's up, what's up with.
- Facing upwards.
- Well-informed; current.
- In a good mood.
- Built, constructed.
- Fitted or fixed at a high or relatively high position, especially on a wall or ceiling.
- Available to view or use; made public; posted.
- Riding the horse; mounted.
- Standing; upright.
- Next in a sequence.
prep
- From south to north of.
- At (a given place, especially one imagined to be higher or more distant from a central location).
- From the mouth towards the source of (a river or waterway).
- Further along (in any direction).
- Of a man: having sex with.
- Toward the center, source, or main point of reference; toward the end at which something is attached.
- Toward the top of.
noun
- The direction opposed to the pull of gravity.
- An up quark.
- An upstairs room of a two story house.
- A positive thing, or a time or situation when things are going well.
adv
- Away from the surface of the Earth or other planet; in opposite direction to the downward pull of gravity.
- Aside or away, so as no longer to be present or in use.
- Towards or at a central place, or any place that is visualised as 'up' by virtue of local features or local convention, or arbitrarily, irrespective of direction or elevation change.
- To or from one's possession or consideration.
- To or at a physically higher or more elevated position.
- Used as an aspect marker to indicate a completed action or state; thoroughly, completely.
- To or in a position of equal advance or equality; not short of, back of, less advanced than, away from, etc.; usually followed by to or with.
- Towards the principal terminus, towards milepost zero.
- In a positive vertical direction.
- North.
- Against the wind or current.
- To a higher level of some quantity or notional quantity, such as price, volume, pitch, happiness, etc.
- Without additional ice.
- Relatively close to the batsman.
verb
noun
- One of several mutually exclusive things which can be chosen.
- A situation which allows a mutually exclusive choice between two or more possibilities; a choice between two or more possibilities.
- alternative rock
- A non-offensive word or phrase that serves as a replacement for a word deemed offensive or unacceptable, though not as a euphemism.
- The remaining option; something available after other possibilities have been exhausted.
adj
noun
- A person or thing having contradictory properties.
- A claim that two apparently contradictory ideas are true.
- An unanswerable question or difficult puzzle, particularly one which leads to a deeper truth.
- The use of counterintuitive or contradictory statements (paradoxes) in speech or writing.
- An apparently self-contradictory statement, which can only be true if it is false, and vice versa.
- A state in which one is logically compelled to contradict oneself.
- A counterintuitive conclusion or outcome.
- A thing involving contradictory yet interrelated elements that exist simultaneously and persist over time.
- The practice of giving instructions that are opposed to the therapist's actual intent, with the intention that the client will disobey or be unable to obey.
noun
- one of a pair
- the officer below the master on a commercial ship
- a fellow member of a team
- the partner of an animal (especially a sexual partner)
- a person's partner in marriage
- an exact duplicate
- South American holly; leaves used in making a drink like tea
- informal term for a friend of the same sex
- South American tea-like drink made from leaves of a South American holly called mate
- a chess move constituting an inescapable and indefensible attack on the opponent's king
verb
adj
adj
noun
- something (a term or expression or concept) that has an inverse relation to something else
- (mathematics) one of a pair of numbers whose product is 1: the reciprocal of 2/3 is 3/2; the multiplicative inverse of 7 is 1/7
- hybridization involving a pair of crosses that reverse the sexes associated with each genotype
adj
- Having two equally important parts; related to something with two parts.
- Of an operation, function, procedure, or logic gate, taking exactly two operands, arguments, parameters, or inputs; having domain of dimension 2.
- Focusing on two mutually exclusive conditions.
- Concerning logic whose subject matter concerns binary states.
- Being in one of two mutually exclusive states.
- Of data, consisting coded values (e.g. machine code) not interpretable as plain or ASCII text (e.g. source code).
- Concerning numbers and calculations using the binary number system.
noun
- Synonym of binary asteroid.
- Synonym of binary star.
- Synonym of binary file; a file consisting of data other than human-readable text.
- Synonym of binary planet.
- The bijective base-2 numeral system, which uses only the digits 0 and 1.
- A state in which only two values are possible, in which something must have one value or the other.
noun
- A reciprocal construction involves two noun phrases where each of the participants occupies both the role of agent and patient with respect to the other. see: Wikipedia:Reciprocal pronoun.
- A relation of mutual dependence or action or influence.
- A reciprocal relationship.
- The characteristic of being reciprocal, e.g. of a relationship between people.
- The mutual exchange of rights, privileges or obligations between nations. see: Wikipedia:Reciprocity (international relations).
- The responses of individuals to the actions of others.
adj
- Consisting of or containing more than one of something.
- Pluralistic.
- In systems of number, not singular or not singular or dual.
noun
- A person with some form of multiplicity, particularly dissociative identity disorder.
- The plural number. In English, referring to more or less than one of something.
- A word in the form in which it potentially refers to something other than one person or thing; and other than two things if the language has a dual form.
English words for 'Each of the two; one and the other; referring to two individuals or items.'
As you may have noticed, above you will find words for "Each of the two; one and the other; referring to two individuals or items.". Hover the mouse over the word you'd like to know more about to view its definition. Click 
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