Synonyms|643Antonyms|206|Broader|7Narrower|0Related|884
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incorrupt(weak, soft)
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indubious(adjective, clear, certain)
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indubitable
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ineluctable
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infallible
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intent
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irrevocable
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just so(expression, adverb, precisely)
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likely
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made certain(expression, uncertain, indefinite)
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marked
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neat
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necessary
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no ifs ands or buts(expression, idiom, adverb, distant, precisely)
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no mistake(expression, adverb, weak, obscure, uncertain)
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on the button(expression, idiom, adverb, precisely)
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on the money(expression, idiom, adverb, precisely)
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on to(expression, uncertain, dubious)
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optimistic
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out
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APASmart Define. (2016). unsure thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/unsure/thesaurus/antonyms
ChicagoSmart Define. 2016. "unsure thesaurus" https://smartdefine.org/unsure/thesaurus/antonyms (accessed September 26, 2026).
HarvardSmart Define 2016, unsure thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/unsure/thesaurus/antonyms>.
MLASmart Define. "unsure thesaurus" 24 March 2016. Web. 26 September 2026. <https://smartdefine.org/unsure/thesaurus/antonyms>