indefinitely
forever
till doomsday
long
donkey's
ages
age
blue moon
grip
enduring
dog's age
imperishable
abiding
light year
far
eternity
crow's age
years
coon's age
longwhiles
eudemic
inveterately
long as one's arm
at length
final curtain
indestructible
undestroyable
durable
perdurable
with ages
until the cows freeze over
until the cows come home
long-pending
eon
hot minute
durative
lifetime
macrobiotic
perpetual
forever and a day
donkey's ears
donkey's years
long-span
lapse
superlong
long haul
longue durée
for the long haul
dolicho-
permanent
deep-throated
macro-
aeon
longish
Kathleen Mavourneen
sesquipedalian
preeternity
period
old
stretch
slim
endless
prolongedly
time out of mind
interminable
eternal
hyperextended
make old bones
overlong
yonks
long ass
old-line
yoinks
long-drawn
long-standing
sesquipedalianism
in perpetuity
longirostrate
evergoing
protracted
mecocephalic
macrobiosis
yeared
month of Sundays
ultralong
sempiternal
go all around the Wrekin
lengthily
ever after
anciently
lengthsome
longsomely
chronic
enduring
imperishable
abiding
far
eudemic
long as one's arm
indestructible
undestroyable
durable
perdurable
long-pending
durative
macrobiotic
perpetual
long-span
superlong
permanent
deep-throated
longish
old
slim
endless
interminable
eternal
hyperextended
long ass
old-line
long-drawn
long-standing
longirostrate
evergoing
protracted
mecocephalic
yeared
ultralong
sempiternal
lengthsome
chronic
indefinitely
forever
till doomsday
long
longwhiles
inveterately
forever and a day
for the long haul
prolongedly
overlong
lengthily
ever after
anciently
longsomely
in perpetuity
donkey's
ages
age
blue moon
grip
dog's age
light year
eternity
crow's age
years
coon's age
final curtain
eon
hot minute
lifetime
forever
donkey's ears
donkey's years
long haul
longue durée
aeon
Kathleen Mavourneen
sesquipedalian
preeternity
period
stretch
time out of mind
yonks
yoinks
sesquipedalianism
macrobiosis
month of Sundays
lapse
make old bones
go all around the Wrekin
English words for 'For a long time, with no defined end.'
As you may have noticed, above you will find words for "For a long time, with no defined end.". Hover the mouse over the word you'd like to know more about to view its definition. Click 
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long talk
this article
Super
gathering of people
To stop working
decolorisation
middle toe
to issue a manifesto
to fill a gap
extensive reading
Ionian mode
upward
protolanguage
Relating to a diary
indefinitely.
renting a house
to be in the limelight
stoicism.
bachelorhood
mathematics
to be down and out
meaning of a word
Not purified
to back away
of a function or curve
endothermic
whodunit
prolongation
elbow
to cherish.
warranty
side effect
lowbrow
overwhelmed
dark grey
sabbatical year
ABS
bookshop
profundity
summarization
By chance
ready money
letter of intent
yellowish
to vie
monthly
prostration
scoop
unbecoming
utter