Alert

مترادف و متضاد alert

1. adjective attentive, lively
   Synonyms: active, all ears, bright, cagey, careful, circumspect, clever, fast on the draw, good hands, heads up, heedful, hip, intelligent, jazzed, observant, on guard, on one’s toes, on the ball, on the job, on the lookout, on the qui vive, perceptive, psyched up, quick, ready, sharp, spirited, switched on, vigilant, wary, watchful, wide-awake, wired, wise, with it
   Antonyms: asleep, drowsy, inattentive, lethargic, sluggish, unobservant, weary
2. noun warning
   Synonyms: admonition, alarm, flap, high sign, Mayday, sign, signal, siren, SOS, tip off, wink
3. verb warn
   Synonyms: alarm, flag, forewarn, give the high sign, inform, notify, put on guard, signal, tip, tip off, wave flag