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alert

adjective

Synonyms and Antonyms of alert

  1. 1 paying close attention usually for the purpose of anticipating approaching danger or opportunity <she needed to stay alert throughout the train ride so as not to miss her stop> Synonyms Argus-eyed, attentive, awake, observant, open-eyed, tenty (also tentie) [Scottish], vigilant, watchful, wide-awake Related Words alive, aware, conscious, sensitive; cognizant, heedful, keen, mindful, observing, regardful, sharp, sharp-eyed; hyperalert, hypervigilant, sleepless, wakeful; careful, cautious, chary, wary; prepared, ready Phrases on guard, on one's toes, on the alert, on the ball, on the qui vive, on tiptoe Near Antonyms absent, absentminded, absorbed, abstracted, daydreaming, dazed, distracted, dreaming, dreamy, engrossed, faraway, insensible, oblivious, preoccupied; sleeping, unaware, unconscious, unknowing, unwitting; careless, heedless, inattentive, unheeding, unmindful, unthinking, unwary; unprepared, unready Antonyms asleep

  2. 2 having or showing a close attentiveness to avoiding danger or trouble <warned us to be alert to the presence of pickpockets on the crowded bus> Synonyms careful, cautious, chary, circumspect, conservative, considerate, gingerly, guarded, heedful, safe, waryRelated Words advertent, attentive, awake, observant, regardful, vigilant, watchful; hypercautious; foresighted, foresightful, forethoughtful, provident, thoughtful; cagey (also cagy), calculating, canny, shrewd; deliberate, slow; ultracareful, ultracautiousNear Antonyms bold, brash, impetuous, rash, reckless, venturesome; asleep, inattentive, regardless; inconsiderate, thoughtless; lax, neglectful, negligent, remiss; imprudent, indiscreet, injudicious; absentminded, forgetful; inadvertent, unintentional, unplannedAntonyms careless, heedless, incautious, unguarded, unmindful, unsafe, unwary

  3. 3 having or showing quickness of mind <an alert and well-trained sheep dog who can handle difficult situations> Synonyms intelligent, brainy, bright, brilliant, clever, exceptional, fast, hyperintelligent, keen, nimble, quick, quick-witted, sharp, sharp-witted, smart, supersmart, ultrasmartRelated Words apt, ingenious, resourceful; acute, astute, discerning, heady, insightful, knowing, perceptive, percipient, perspicacious, sagacious, sapient, savvy, wise; cerebral, erudite, genial, highbrow, knowledgeable, learned, literate, scholarly, well-read; educated, informed, schooled, skilled, trained; creative, inventive, judicious, prudent, sage, sane, sapient, sensible, sound, wise; crafty, cunning, foxy, shrewd, wily; logical, rational, reasonableNear Antonyms feebleminded, simpleminded; boobish, foolish, half-baked, idiotic (also idiotical), imbecile (or imbecilic), moronic, silly; ignorant, illiterate, lowbrow, nonintellectual, unacademic, uneducated, uninformed, unintellectual, untaught, unthinking; absurd, asinine, balmy, cockeyed, crackpot, crazy, cuckoo, daffy, daft, dippy, dotty, featherheaded, fool, half-baked, harebrained, insane, kooky (also kookie), loony (also looney), lunatic, mad, nonsensical, nutty, preposterous, sappy, screwball, tomfool, unwise, wacky (also whacky), zanyAntonyms airheaded, birdbrained, boneheaded, brain-dead, brainless, bubbleheaded, chuckleheaded, dense, dim, dim-witted, doltish, dopey (also dopy), dorky [slang], dull, dumb, dunderheaded, empty-headed, fatuous, gormless [chiefly British], half-witted, knuckleheaded, lamebrain (or lamebrained), lunkheaded, mindless, obtuse, opaque, pinheaded, senseless, simple, slow, slow-witted, soft, softheaded, stupid, thick, thickheaded, thick-witted, unbrilliant, unintelligent, unsmart, vacuous, weak-minded, witless

  4. 4 having or showing the ability to respond without delay or hesitation <an alert force of commandos, ready to go on a mission at a moment's notice> Synonyms alacritous, quick, expeditious, prompt, ready, willingRelated Words receptive, responsive; immediate, instant, instantaneous, summary; breakneck, breathless, brisk, fast, fleet, fleet-footed, hit-and-run, lightning, rapid, rapid-fire, rattling, snappy, speedy, swift, whirlwind; eager, keen, sharp; apt, clever, quick, quick-witted, ready-witted, sharp-witted, smartNear Antonyms unresponsive; crawling, creeping, dallying, dawdling, dilatory, dillydallying, dragging, laggard, lagging, lazy, lazyish, leisurely, logy (also loggy), poking, poky (or pokey), slothful, slow, slowish, sluggish, tardy, unhurried; dormant, idle, inactive, inert




alert

noun

Synonyms and Antonyms of alert

  1. 1 the act or an instance of telling beforehand of danger or risk <the white flash of the doe's raised tail, giving the “danger” alert to her fawns> Synonyms admonishment, admonition, alarm (also alarum), warning, caution, forewarning, heads-up, noticeRelated Words auguring, augury, forecasting, foretelling, predicting, prediction, premonition, presaging, prognosticating, prophecy (also prophesy), prophesying; apprising, informing, notification, notifying, tip-off; advice, counsel, guidance, recommendation, suggestion, tip; announcement, declaration

  2. 2 the state of being constantly attentive and responsive to signs of opportunity, activity, or danger <the doctor told the patient to be on the alert for any signs of infection> Synonyms vigilance, alertness, attentiveness, qui vive, red alert, watch, watchfulnessRelated Words aliveness, awareness, consciousness, mindfulness, receptiveness, receptivity, sensitivity; care, carefulness, cautiousness, chariness, heedfulness, wariness; preparation, readinessNear Antonyms absentmindedness, abstraction, daydreaming, daze, distraction; absorption, engrossment, obliviousness, preoccupation; unawareness, unconsciousness; carelessness, heedlessness, inattention, inattentiveness, inobservance; unwariness




alert

verb

Synonyms and Antonyms of alert

  1. to give notice to beforehand especially of danger or risk <alerted us to the possibility that the roads would be flooded and we might have to take a detour> Synonyms advise, warn, caution, forewarn, wakeRelated Words augur, forecast, foretell, harbinger, predict, presage, prognosticate, prophesy; apprise, inform, notify, tip (off); admonish; bode, forebode (also forbode), foreshadow, foretoken, portendNear Antonyms imperil, risk




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