15 entries under irregular topic. ×

17
cyclic(adjective, regular, routine, erratic)
12
periodic(adjective, usual, regular, standard)
10
periodical(noun, adjective, regular, routine)
8
recurrent(adjective, regular, routine, erratic)
5
intermittent(adjective, regular, limited, routine)
3
epochal(adjective, regular, routine, erratic)
3
isochronal(adjective, regular, routine, erratic)
2
every other(expression, adjective, erratic, infrequent)
2
isochronous(adjective, regular, routine, erratic)
2
occasional(adjective, regular, routine, infrequent)
1
by bits and pieces(expression, adjective, idiom, erratic)
1
here and there(expression, adjective, idiom, erratic)
1
iterant(adjective, erratic, infrequent, recurrent)
1
stop-and-go(adjective, erratic, infrequent, recurrent)
0
now then(expression, adjective, infrequent, sporadic)
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APASmart Define. (2015). seasonal thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/seasonal/thesaurus/synonyms
ChicagoSmart Define. 2015. "seasonal thesaurus" https://smartdefine.org/seasonal/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2015, seasonal thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/seasonal/thesaurus/synonyms>.
MLASmart Define. "seasonal thesaurus" 7 July 2015. Web. 29 September 2026. <https://smartdefine.org/seasonal/thesaurus/synonyms>