semioccasional
semioccasionally
uncommonly
from time to time
lippening
sometime
most of the time
sometimes
severalfold
sporadically
periodically
other times
often
accidental
two-time
repeatedly
once in a way
brush
ad lib
semiregular
frequent
many a times
randomly
at times
semihabitable
high-frequency
atypical
adventitiously
severally
once in a while
every so often
as often as not
out of the way
a lot
periprocedurally
on occasion
much
now
randomish
many at times
rarely
quondam
thricely
semiaccidentally
somedays
thick
every now and then
one-shot
here and there
make a habit of
unfrequent
punctual
seldom
semirandom
any day
nonrecurring
in one case
one time
heterochronic
once
adventitious
sporadical
some
wontedly
interoccasion
uncommon
unwonted
once-in-a-lifetime
nonaccidental
occasionally
now and then
nonrare
all the time
now and again
unaccidental
oft-repeated
come to hand
semiengaged
rareish
passim
frequently
casual
ofttimes
otherwise
oftentimes
semirare
rehash
oft

English words for 'Once in a while; on rare occasions.'

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