once in a while
• from time to time; occasionally.
Similar:
occasionally,
from time to time,
(every) now and then/again,
every so often,
every once in a while,
on occasion,
on occasions,
on the odd occasion,
at times,
sometimes,
off and on,
at intervals,
periodically,
sporadically,
spasmodically,
erratically,
irregularly,
intermittently,
in/by fits and starts,
fitfully,
discontinuously,
piecemeal,
interruptedly,
