19
different(adjective, dissimilar, unlike, various, miscellaneous)
17
diverse(adjective, different)
13
unlike(adjective, preposition, like, different, dissimilar)
10
dissimilar(adjective, alike, comparison)
9
other(adjective, different)
8
opposite(adjective, different, conflicting, dissimilar, unlike)
8
unalike(adjective, common, ordinary, dissimilar)
7
unique(adjective, equal)
6
distinct(adjective, obscure, uncertain, different, unconnected)
6
various(adjective, miscellaneous, differing)
5
disparate(adjective, different)
5
divergent(adjective, standard, differing)
5
in contrast
5
one-of-a-kind
5
polar(adjective, opposite, opposed)
5
variant(adjective, different, same)
4
alien(adjective, dissimilar)
4
contrary(adjective, antagonistic, opposite)
4
heterogeneous
4
irreplaceable
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APASmart Define. (2016). similar thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/similar/thesaurus/antonyms
ChicagoSmart Define. 2016. "similar thesaurus" https://smartdefine.org/similar/thesaurus/antonyms (accessed September 26, 2026).
HarvardSmart Define 2016, similar thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/similar/thesaurus/antonyms>.
MLASmart Define. "similar thesaurus" 29 March 2016. Web. 26 September 2026. <https://smartdefine.org/similar/thesaurus/antonyms>