RichThesaurus
(every) once in a while
(every) once in a while
synonyms
at times
(every) now and again
sometimes
periodically
sporadically
on the odd occasion
from time to time
occasionally
every so often
at intervals
intermittently
spasmodically
on occasions
off and on
(every) now and then
irregularly
on occasion
interruptedly
fitfully
piecemeal
discontinuously
in fits and starts
on and off
by fits and starts
erratically
ever and anon
infrequently
once in a blue moon
hardly ever
only occasionally
now and again
only now and then
now and then
hardly
scarcely
scarcely ever
on rare occasions
not often
on occasion(s)
rarely
seldom
almost never
(every) once in a while
antonyms
often
frequently
constantly
regularly