7
unpaired
6
alone(adjective, unique, same)
6
disparate(adjective, inadequate, distant, disagreeable, odd)
6
dissimilar(adjective, distant, odd, different, uneven)
6
extraordinary
6
one and only(expression, adjective, idiom)
6
second to none(noun, expression, idiom, new, unique)
6
singular(adjective, same)
5
best(adjective, excellent, superb, exceptional, marvelous)
5
divergent(adjective, mixed, distant, odd, different)
5
diverse(adjective, mixed, distant, odd, different)
5
superlative(adjective, excellent, perfect, superb, exceptional)
5
surpassing
5
unalike(adjective, distant, odd, different, uneven)
5
unexcelled
5
unmated
5
varying(adjective, distant, odd, different, uneven)
4
contrasting(adjective, different)
4
discordant(adjective, inadequate, different, inappropriate, unacceptable)
4
exceptional(adjective, excellent, extraordinary, superb, outstanding)
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APASmart Define. (2015). unmatched thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/unmatched/thesaurus/synonyms
ChicagoSmart Define. 2015. "unmatched thesaurus" https://smartdefine.org/unmatched/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, unmatched thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/unmatched/thesaurus/synonyms>.
MLASmart Define. "unmatched thesaurus" 10 April 2015. Web. 23 September 2026. <https://smartdefine.org/unmatched/thesaurus/synonyms>