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mistrustful(cautious, suspicious, watchful)
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obliging(considerate, responsive, helpful)
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on your guard(expression, idiom, alert, attentive, watchful)
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polite(considerate, responsive, helpful)
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preoccupied(adjective, considerate, responsive, aware, helpful)
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provident(adjective, considerate, cautious, prudent, suspicious)
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prudent(adjective, considerate, cautious, suspicious, watchful)
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regardful(adjective, considerate, responsive, aware, helpful)
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respectful(considerate, responsive, helpful)
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responsive(considerate, helpful)
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safe(adjective, considerate, cautious, prudent, suspicious)
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solicitous(considerate, responsive, helpful)
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sparing(adjective, considerate, cautious, prudent, suspicious)
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studious(adjective, considerate, responsive, aware, helpful)
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thinking twice(expression, adjective, considerate, cautious, prudent)
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thoughtful(considerate, responsive, helpful)
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thrifty(adjective, considerate, cautious, prudent, suspicious)
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uneasy(adjective, awkward, uncomfortable)
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walking on eggs(expression, adjective, considerate, cautious, prudent)
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watching out(expression, adjective, considerate, cautious, prudent)
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APASmart Define. (2011). on the qui vive thesaurus. Retrieved October 1, 2026, from https://smartdefine.org/on_the_qui_vive/thesaurus/synonyms
ChicagoSmart Define. 2011. "on the qui vive thesaurus" https://smartdefine.org/on_the_qui_vive/thesaurus/synonyms (accessed October 1, 2026).
HarvardSmart Define 2011, on the qui vive thesaurus, Smart Define, viewed 1 October, 2026, <https://smartdefine.org/on_the_qui_vive/thesaurus/synonyms>.
MLASmart Define. "on the qui vive thesaurus" 24 May 2011. Web. 1 October 2026. <https://smartdefine.org/on_the_qui_vive/thesaurus/synonyms>