Synonyms|663Antonyms|226|Broader|7Narrower|9Related|1.2k
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informal
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ingenuous
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innocuous
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irrational(sound, rational)
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juvenile delinquent
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lax
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lazy
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licentious
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lordly
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lying
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mad as a March hare(expression, idiom, calm, sound)
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mad as a hatter(expression, idiom, calm, sound)
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mendacious
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mindless
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minor
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neglectful
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negligent
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nonaccountable
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noncausal
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not liable(expression, hindered)
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ChicagoSmart Define. 2015. "responsible thesaurus" https://smartdefine.org/responsible/thesaurus/antonyms (accessed September 25, 2026).
HarvardSmart Define 2015, responsible thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/responsible/thesaurus/antonyms>.
MLASmart Define. "responsible thesaurus" 10 April 2015. Web. 25 September 2026. <https://smartdefine.org/responsible/thesaurus/antonyms>