199 entries under expression topic. ×

1
not rash(cautious, tactful, circumspect)
1
note of alarm
1
on lookout(cautious, tactful, circumspect)
1
on the beam(idiom, familiar, wise, knowledgeable)
1
on the double(idiom, fast, rapid, swift)
1
on the qui vive(adjective, idiom, keen, lively)
1
on your mettle(idiom, adverb)
1
pass out(verb, give, declare, report)
1
paying attention(adverb, sharp, attentive, alive)
1
playing it cool(careful, thoughtful, prudent, watchful)
1
playing safe(careful, thoughtful, sober, prudent)
1
put next to
1
put one wise(verb, idiom, advise, warn)
1
quick on the draw(idiom, sharp, smart, lively)
1
quick on the uptake(adjective, idiom, open, sharp)
1
send word(verb, give, declare, report)
1
sensitive to(adjective, understanding, keen, sensible)
1
signal of distress
1
signaling device(noun, caution, signal, warning)
1
sound the alarm
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APASmart Define. (2016). alert thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/alert/thesaurus/synonyms
ChicagoSmart Define. 2016. "alert thesaurus" https://smartdefine.org/alert/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, alert thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/alert/thesaurus/synonyms>.
MLASmart Define. "alert thesaurus" 26 February 2016. Web. 23 September 2026. <https://smartdefine.org/alert/thesaurus/synonyms>