30 entries under periodicity topic. ×

8
never(adverb, rareness)
6
seldom(adverb, rareness)
5
in some cases
5
infrequently(adverb, rareness)
5
rarely(adverb, rareness)
4
sometimes(adverb, rareness)
4
occasionally(adverb, rareness)
4
periodically(adverb, rareness)
2
intermittently(adverb, rareness)
2
sporadically(adverb, rareness)
2
at no time(expression, idiom, adverb, never)
2
nevermore
2
once
2
at intervals(expression, steadily)
2
at random(expression, regularly)
2
every so often(expression, idiom, regularly)
1
uncommonly
1
at times
1
from time to time
1
hardly
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APASmart Define. (2016). always thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/always/thesaurus/antonyms
ChicagoSmart Define. 2016. "always thesaurus" https://smartdefine.org/always/thesaurus/antonyms (accessed September 29, 2026).
HarvardSmart Define 2016, always thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/always/thesaurus/antonyms>.
MLASmart Define. "always thesaurus" 11 March 2016. Web. 29 September 2026. <https://smartdefine.org/always/thesaurus/antonyms>