Synonyms|115Antonyms|27|Broader|1Narrower|0Related|8
0
serious
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significant
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thorough
0
thoroughly
0
thoughtful
0
unlikely(adverb, unmistakably, possibly, perceptibly)
0
wise
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APASmart Define. (2015). on the surface thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/on_the_surface/thesaurus/antonyms
ChicagoSmart Define. 2015. "on the surface thesaurus" https://smartdefine.org/on_the_surface/thesaurus/antonyms (accessed September 27, 2026).
HarvardSmart Define 2015, on the surface thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/on_the_surface/thesaurus/antonyms>.
MLASmart Define. "on the surface thesaurus" 10 April 2015. Web. 27 September 2026. <https://smartdefine.org/on_the_surface/thesaurus/antonyms>