Synonyms|77Antonyms|4|Broader|1Narrower|0Related|11
1
agile
1
bright
1
careful(adjective, alert, restless, disturbed, attentive)
1
chary(adjective, alert, attentive, observant)
1
guarded(adjective, alert, attentive, watchful, observant)
1
heedful(adjective, alert, careful, restless, disturbed)
1
nimble
1
on the qui vive(expression, idiom, alert, careful, disturbed)
1
on the watch(expression, idiom, alert, attentive, observant)
1
prompt
1
quick
1
smart
1
unblinking
1
unsleeping(adjective, alert, careful, restless, disturbed)
0
Argus-eyed
0
acute(alert, attentive, watchful)
0
afoot
0
agog(alert, attentive, watchful)
0
alerting
0
all ears(expression, alert, attentive, observant)
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APASmart Define. (2015). on the alert thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/on_the_alert/thesaurus/synonyms
ChicagoSmart Define. 2015. "on the alert thesaurus" https://smartdefine.org/on_the_alert/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, on the alert thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/on_the_alert/thesaurus/synonyms>.
MLASmart Define. "on the alert thesaurus" 14 April 2015. Web. 28 September 2026. <https://smartdefine.org/on_the_alert/thesaurus/synonyms>