86 entries under irregular topic. ×

9
fitful(adjective, unstable, doubtful, unsettled)
8
fluctuating(adjective, weak, unstable, doubtful)
8
shifting(adjective, upset, anxious, unstable)
7
shifty(adjective, weak, sensitive, doubtful)
7
spasmodic(adjective, unstable, unsettled, unpredictable)
6
changeful(adjective, upset, anxious, unstable)
6
occasional(adjective, chance, unreliable, uneven)
6
temperamental(adjective, change, weak, continue, delicate)
5
arbitrary(adjective, unusual, unreliable, changeable)
5
desultory(unpredictable, unreliable, erratic, random)
5
flickering(adjective, changeable, variable, lambent)
5
impulsive(adjective, unusual, unstable, chance, original)
5
sporadic(unreliable, uneven, variable, erratic)
5
uneven(adjective, unpredictable, unreliable, variable)
5
varying(adjective, unstable, unsettled, unpredictable)
4
rambling(unpredictable, unreliable, irregularity of recurrence)
4
strange(unpredictable, unreliable)
3
jerky(unreliable, uneven, variable, erratic)
2
devious(unpredictable, unreliable, untrustworthy, sneaky)
2
discontinuous(unreliable, uneven, variable, erratic)
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APASmart Define. (2016). uncertain thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/uncertain/thesaurus/synonyms
ChicagoSmart Define. 2016. "uncertain thesaurus" https://smartdefine.org/uncertain/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2016, uncertain thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/uncertain/thesaurus/synonyms>.
MLASmart Define. "uncertain thesaurus" 24 March 2016. Web. 22 September 2026. <https://smartdefine.org/uncertain/thesaurus/synonyms>