Synonyms|317Antonyms|72|Broader|3Narrower|4Related|494
7
irregular
4
aperiodic
3
non-punctual
2
continual
2
incessant
2
noncyclic
2
perpetual
1
constant
1
continuous
1
ceaseless
1
episodic
1
erratic
1
interminable
1
intermittent
1
lasting
1
nonoscillatory
1
nonperiodic
1
nonstop
1
normal
1
permanent
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APASmart Define. (2015). periodic thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/periodic/thesaurus/antonyms
ChicagoSmart Define. 2015. "periodic thesaurus" https://smartdefine.org/periodic/thesaurus/antonyms (accessed September 28, 2026).
HarvardSmart Define 2015, periodic thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/periodic/thesaurus/antonyms>.
MLASmart Define. "periodic thesaurus" 13 April 2015. Web. 28 September 2026. <https://smartdefine.org/periodic/thesaurus/antonyms>