32 entries under adverb topic. ×

10
now and then(expression, idiom, time, moment)
10
sometimes(expression, time, moment, rare)
10
occasionally(expression, time, moment, rare)
8
from time to time(expression, time, moment, rare)
8
now and again(expression, time, moment, rare)
7
on occasion(expression, time, moment, rare)
6
infrequently(expression, time, moment, rare)
6
off and on(expression, time, moment, rare)
5
irregularly(vacillating, rarely, infrequently, intermittently)
5
every now and then(expression, time, moment, rare)
4
at times(expression, time, moment, rare)
4
every so often(expression, time, moment, rare)
4
on and off(expression, time, moment, rare)
4
sporadically(expression, time, rare, vacillating)
3
intermittently(expression, time, rare, vacillating)
3
periodically(expression, time, rare, frequency)
3
seldom(infrequently, occasionally)
2
at intervals(expression, time, rare, frequency)
1
alternately(vacillating, infrequently, intermittently, sporadically)
1
hardly
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APASmart Define. (2013). once in a while thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/once_in_a_while/thesaurus/synonyms
ChicagoSmart Define. 2013. "once in a while thesaurus" https://smartdefine.org/once_in_a_while/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2013, once in a while thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/once_in_a_while/thesaurus/synonyms>.
MLASmart Define. "once in a while thesaurus" 18 May 2013. Web. 25 September 2026. <https://smartdefine.org/once_in_a_while/thesaurus/synonyms>