37
unusual(adjective, wrong, excellent, extraordinary, strange)
33
erratic(adjective, character, extraordinary, unusual, strange)
31
uneven(adjective, mean, smooth, rough, strange)
31
odd(adjective, wrong, excellent, rough, extraordinary)
27
abnormal(adjective, good, character, wrong, excellent)
25
guerrilla(noun, revolutionary, paramilitary, war man)
24
aberrant(adjective, good, excellent, extraordinary, unusual)
24
anomalous(adjective, good, disorder, wrong, excellent)
23
strange(adjective, wrong, excellent, extraordinary, unusual)
22
capricious(adjective, unusual, strange, lively, uncertain)
22
sporadic(adjective, unusual, special, variable, broken)
21
eccentric(adjective, character, extraordinary, unusual, strange)
21
peculiar(adjective, wrong, excellent, extraordinary, unusual)
20
disorderly(adjective, adverb, disorder, wrong, improper)
20
unconventional(adjective, wrong, unusual, strange, crazy)
20
random(adjective, adverb, insignificant, chance, casual)
19
rough(adjective, mean, coarse, uneven, unbalanced)
18
variable(adjective, rough, lively, uncertain, active)
17
deviant(adjective, good, flat, unusual, strange)
17
unequal(adjective, rough, harsh, coarse, different)
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APASmart Define. (2016). irregular thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/irregular/thesaurus/synonyms
ChicagoSmart Define. 2016. "irregular thesaurus" https://smartdefine.org/irregular/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2016, irregular thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/irregular/thesaurus/synonyms>.
MLASmart Define. "irregular thesaurus" 1 April 2016. Web. 22 September 2026. <https://smartdefine.org/irregular/thesaurus/synonyms>