on the alert Definition

alarm, alarms, alerting, alertness, alerts, alive, attention, awake, aware, description, preparedness, readiness, ready, red, reporting, vigilance, vigilant, wakeful, warn, warning, warnings, wary, descriptions, enrollment, inscription, keep, nerd, ping, registration, alarum, alertly, asleep, atip, awareness, beware, brisk, caution, clear-headed, cock, conscious, consciousness, emergency, flag, flare, fly, guard, heads-up, horn, intelligent, jog, keen, nap, observant, open-eyed, qui vive, rouse, sharp, siren, sleep, sleepless, stand-by, standby, tornado, unalert, wake-up, watch, watchful, weather eye, wide-awake, wit, aaa, acute, adventurous, agile, amber, apb, argus, arouse, arousing, assiduity, asterisk, avast, awaking, ball, bark, beep, beeping, beta rhythm, beta wave, bleary-eyed, blip, brace, braces, bright, busy bee, caret, clearheaded, cockup, comatose, cue,