2
once
2
alternately(adverb, infrequently, intermittently, sporadically)
2
annually
2
at intervals(expression, time, rare, frequency)
2
at regular intervals(expression, idiom, adverb, regularity of recurrence periodicity)
2
at times(expression, idiom, adverb)
2
day by day(expression, idiom, regularity of recurrence periodicity)
2
ever and again(expression, idiom, adverb, time, continue)
2
every so often(expression, adverb, time, rare, frequency)
2
on and off(expression, adverb, time, rare, frequency)
2
on occasion(expression, adverb, time, rare, frequency)
2
repeatedly(adverb, intermittently)
2
routinely(adverb, regularly)
2
serially
2
sometime(expression, adverb, time, rare, frequency)
1
betimes(adverb, continue)
1
canonically(adverb, regularly)
1
chronically(adverb, regularly)
1
commonly(adverb, regularly)
1
constantly(adverb, regularly)
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APASmart Define. (2015). periodically thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/periodically/thesaurus/synonyms
ChicagoSmart Define. 2015. "periodically thesaurus" https://smartdefine.org/periodically/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, periodically thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/periodically/thesaurus/synonyms>.
MLASmart Define. "periodically thesaurus" 14 April 2015. Web. 22 September 2026. <https://smartdefine.org/periodically/thesaurus/synonyms>