17 entries under routine topic. ×

11
isochronal(adjective, regular, irregular, joint)
7
recurrent(adjective, regular, irregular, repetition)
5
intermittent(adjective, regular, irregular, erratic)
5
periodical(noun, adjective, regular, irregular)
4
cyclic(adjective, regular, irregular, repetition)
2
epochal(adjective, regular, irregular, erratic)
2
seasonal(adjective, regular, irregular, erratic)
1
at various times(expression, adjective, idiom, regular)
1
centennial(adjective, regular, sporadic, intermittent)
1
every once in a while(expression, adjective, idiom, regular)
1
every so often(expression, adjective, idiom, regular)
1
hourly(adjective, regular, sporadic, intermittent)
1
monthly(adjective, regular, sporadic, intermittent)
1
on-again-off-again(adjective, regular, sporadic, intermittent)
1
on certain occasions(expression, adjective, idiom, regular)
1
orbital(adjective, regular, sporadic, intermittent)
1
weekly(adjective, regular, sporadic, intermittent)
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APASmart Define. (2015). isochronous thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/isochronous/thesaurus/synonyms
ChicagoSmart Define. 2015. "isochronous thesaurus" https://smartdefine.org/isochronous/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, isochronous thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/isochronous/thesaurus/synonyms>.
MLASmart Define. "isochronous thesaurus" 14 April 2015. Web. 27 September 2026. <https://smartdefine.org/isochronous/thesaurus/synonyms>