Synonyms|141Antonyms|1|Broader|2Narrower|0Related|26
1
name day
1
natal day
1
octennial
1
on-again-off-again(adjective, regular, routine, sporadic, intermittent)
1
on certain occasions(expression, adjective, idiom, regular, routine)
1
once-a-month
1
orbital(adjective, regular, routine, sporadic, intermittent)
1
period(noun, adjective)
1
period of time
1
point
1
quadrennial
1
quarterly
1
quasquicentennial
1
quincentenary
1
quincentennial
1
quinquennial
1
recurrent(adjective, regular, routine, sporadic, intermittent)
1
seasonal(adjective, regular, routine, sporadic, intermittent)
1
semestral
1
semiannual
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APASmart Define. (2015). centennial thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/centennial/thesaurus/synonyms
ChicagoSmart Define. 2015. "centennial thesaurus" https://smartdefine.org/centennial/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, centennial thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/centennial/thesaurus/synonyms>.
MLASmart Define. "centennial thesaurus" 10 April 2015. Web. 23 September 2026. <https://smartdefine.org/centennial/thesaurus/synonyms>