19 entries under regular topic. ×

10
isochronous(adjective, irregular, routine, joint)
7
periodic(adjective, irregular, repetition, erratic)
7
periodical(noun, adjective, irregular, routine)
7
recurrent(adjective, irregular, routine, repetition)
6
cyclic(adjective, irregular, routine, repetition)
5
intermittent(adjective, irregular, routine, erratic)
3
epochal(adjective, irregular, routine, erratic)
2
like clockwork(expression, adjective, idiom, repetition)
2
seasonal(adjective, irregular, routine, erratic)
1
at various times(expression, adjective, idiom, routine)
1
centennial(adjective, routine, sporadic, intermittent)
1
every once in a while(expression, adjective, idiom, routine)
1
every so often(expression, adjective, idiom, routine)
1
hourly(adjective, routine, sporadic, intermittent)
1
monthly(adjective, routine, sporadic, intermittent)
1
on-again-off-again(adjective, routine, sporadic, intermittent)
1
on certain occasions(expression, adjective, idiom, routine)
1
orbital(adjective, routine, sporadic, intermittent)
1
weekly(adjective, routine, sporadic, intermittent)
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APASmart Define. (2015). isochronal thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/isochronal/thesaurus/synonyms
ChicagoSmart Define. 2015. "isochronal thesaurus" https://smartdefine.org/isochronal/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, isochronal thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/isochronal/thesaurus/synonyms>.
MLASmart Define. "isochronal thesaurus" 14 April 2015. Web. 26 September 2026. <https://smartdefine.org/isochronal/thesaurus/synonyms>