- alert
- adj1. wide-awake, aware, Inf. heads-up, Inf. on the ball, Inf. on the stick, Inf. on one's toes; astir, up and about, up and doing, bright and early; smart, bright, sharp, keen, quick, Inf. quick on the trigger.2. vigilant, watchful, Argus-eyed, attentive, on the qui vive; on the watch, on the alert, on the lookout; guarded, on guard, in readiness, prepared.3. heedful, mindful, careful, cautious, wary, chary; precautious, circumspect, prudent, discreet.4. swift, quick, speedy, rapid, fast, fleet; agile, nimble, spry, brisk, sprightly; lively, alive, vivacious, animated, spirited, frisky, active.n6. alarm, Archaic. alarum, tocsin, siren, whistle, warning signal, warning; air raid drill, blackout, civil defense drill.
A Note on the Style of the synonym finder. 2014.