Synonyms|233Antonyms|71|Broader|0Narrower|0Related|1

74 entries under alert topic. ×

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clued up(expression, aware, clued-in)
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forewarning(sign, notice, caution, signal)
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hint(information, sign, notice, caution)
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on the stick(expression, idiom, aware, clued-in)
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on your toes(expression, idiom, aware, clued-in)
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open-eyed
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sensible(aware, clued-in)
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sign(notice, caution, signal, alarm)
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signal(sign, notice, caution, alarm)
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tipoff(noun, alarm, watch-it)
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token(sign, notice, caution, signal)
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wink(sign, notice, caution, signal)
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with your wits about you(expression, idiom, aware, clued-in)
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word to wise(noun, expression, idiom, signal)
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APASmart Define. (2011). heads up thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/heads_up/thesaurus/synonyms
ChicagoSmart Define. 2011. "heads up thesaurus" https://smartdefine.org/heads_up/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2011, heads up thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/heads_up/thesaurus/synonyms>.
MLASmart Define. "heads up thesaurus" 24 May 2011. Web. 24 September 2026. <https://smartdefine.org/heads_up/thesaurus/synonyms>