Synonyms|63Antonyms|4|Broader|0Narrower|0Related|8
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err
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error
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flat-footed(ignorantly, unwatchful)
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forthwith(suddenly, unexpectedly, unawares)
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fortuitously
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harm
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injure
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innocently
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naively
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not on the job(expression, idiom, ignorantly, unwatchful)
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obliviously
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off-guard(ignorantly, unwatchful)
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on the hop(expression, idiom, suddenly, unexpectedly, unawares)
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suddenly(unexpectedly, unawares, ignorantly, unanticipatedly)
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suffer
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unalert(ignorantly, unwatchful)
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unanticipatedly(suddenly, unexpectedly, unawares, ignorantly)
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unaware(suddenly, unexpectedly, unawares)
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unwatchful
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unwitting
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APASmart Define. (2015). by mistake thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/by_mistake/thesaurus/synonyms
ChicagoSmart Define. 2015. "by mistake thesaurus" https://smartdefine.org/by_mistake/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, by mistake thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/by_mistake/thesaurus/synonyms>.
MLASmart Define. "by mistake thesaurus" 14 April 2015. Web. 25 September 2026. <https://smartdefine.org/by_mistake/thesaurus/synonyms>