4
sentient(adjective, understanding, open, keen, sensible)
4
strict(adjective, vigilant)
4
threat(noun, information, sign, notice, caution)
4
token(noun, sign, notice, indication, caution)
4
vigilance(noun, caution)
4
vital(adjective, adverb, good, clear, pleasant)
3
able(adjective, smart, bright, intelligent, competent)
3
Argus-eyed
3
adroit(adjective, good, keen, sharp, smart)
3
alarm bell(expression, idiom, warning, bell, siren)
3
alerting
3
astir(adjective, adverb, activity, moving, energetic)
3
awaken(verb, produce, provoke, stimulate, excite)
3
badge(noun, indication)
3
beckon(verb, indicate)
3
betoken(verb, indicate)
3
buoy(noun, alarm)
3
cagey(adjective, bright, lively, careful, cautious)
3
close
3
concentrated(adjective, set, determined, deep, fixed)
<1678910>
10 years ago|34k views|share |citing 
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>