23 entries under infrequent topic. ×

22
periodic(adjective, exact, ordinary, usual, steady)
13
recurring(adjective, regular, irregular, routine, normal)
11
periodical(noun, adjective, regular, irregular, routine)
9
cyclic(adjective, exact, ordinary, usual, steady)
8
alternate(adjective, regular, irregular, routine, other)
6
fitful(adjective, irregular, unreliable, variable, broken)
6
isochronal(adjective, regular, irregular, routine, repetition)
6
isochronous(adjective, regular, irregular, routine, repetition)
5
epochal(adjective, regular, irregular, routine, erratic)
5
seasonal(adjective, regular, irregular, routine, erratic)
4
irregular(adjective, disturbed, variable, broken, erratic)
3
discontinuous(irregular, unreliable, uneven, variable, random)
3
every other(expression, adjective, idiom, irregular, erratic)
3
occasional(adjective, regular, irregular, routine, unreliable)
3
spasmodic(regular, irregular, routine, unreliable, variable)
2
sporadic(adjective, regular, irregular, routine, unreliable)
1
by bits and pieces(expression, adjective, idiom, irregular, erratic)
1
here and there(expression, adjective, idiom, irregular, erratic)
1
hit-or-miss(irregular, disturbed, broken, random)
1
iterant(adjective, irregular, erratic, sporadic)
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APASmart Define. (2015). recurrent thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/recurrent/thesaurus/synonyms
ChicagoSmart Define. 2015. "recurrent thesaurus" https://smartdefine.org/recurrent/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, recurrent thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/recurrent/thesaurus/synonyms>.
MLASmart Define. "recurrent thesaurus" 13 April 2015. Web. 23 September 2026. <https://smartdefine.org/recurrent/thesaurus/synonyms>