unheard-of
unexampled
historically
beyond
something else
new
unwontedly
unk-unk
remarkable
unaccustomed
some
hellacious
unusual
different
sole
alien
unascertained
first
antrin
fremd
seld
obscurely
surprise
unexpectedly
offbeat
extraordinary
by chance
unharked
wonder
rare as a four-leaf clover
change-up
horseless carriage
booby trap
pitfall
freakishly
just like that
capriciously
like the wind
fremsome
unique
uncommon
unsupposed
semirare
inexplicably
vanishing
rareish
isanomal
anomalism
accidentally
unploughed
unidentifiably
unscripted
unusualness
quaint
madly
little-known
inenubilable
unfamiliarly
unforeseenly
surreption
rare as hen's teeth
peculiar
unclearness
unusually
strange
queer as a clockwork orange
umpteen
on the tip of one's tongue
unsuspect
nonmiraculous
unexpected
prejacent
unusuality
uncommonly
improvided
out of the way
all at once
uncredited
astonishment
phenomenon
atypical
unexpectedness
unfamiliar
eureka moment
freak
desertlessly
last time
unknown
ultramundane
noncategorizable
step change
eye opener
unwonted
crazy
inevident
undeservedly
turbid
oddment
unheard-of
unexampled
new
remarkable
unaccustomed
hellacious
different
sole
alien
unascertained
antrin
fremd
seld
offbeat
extraordinary
unharked
rare as a four-leaf clover
fremsome
unique
uncommon
unsupposed
semirare
rareish
unploughed
unscripted
quaint
little-known
inenubilable
rare as hen's teeth
peculiar
strange
queer as a clockwork orange
unsuspect
nonmiraculous
prejacent
improvided
uncredited
atypical
unfamiliar
freak
unknown
ultramundane
noncategorizable
unwonted
crazy
inevident
turbid
historically
unwontedly
obscurely
unexpectedly
freakishly
just like that
capriciously
inexplicably
accidentally
unidentifiably
madly
unfamiliarly
unforeseenly
unusually
uncommonly
all at once
desertlessly
undeservedly
beyond
something else
unk-unk
unusual
first
surprise
wonder
change-up
horseless carriage
booby trap
pitfall
vanishing
isanomal
anomalism
unusualness
surreption
unclearness
unexpected
unusuality
astonishment
phenomenon
unexpectedness
eureka moment
last time
step change
eye opener
oddment
English words for 'Previously unknown; unprecedented.'
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