Definition for Alert:

• Watchful, vigilant; lively, nimble; ( n.) warning call, alarm; on the a., on the look-out. Hence alertly adv. alertness n. [ French]

Synonyms for Alert:

• adj.

  •active (adjective)
  • about.
  •all (adjective)
  • watchful.
  •attentive (adjective)
  • fascinated,
  • diligent,
  • cautious,
  • Concentrating,
  • intent,
  • responsible,
  • on the qui vive,
  • rapt,
  • concerned,
  • heedful,
  • sharp,
  • Considering,
  • engrossed,
  • entranced,
  • preoccupied,
  • on one's toes,
  • on the job,
  • watchful,
  • Immersed,
  • absorbed,
  • regardful,
  • on the lookout,
  • interested,
  • vigilant,
  • Hearkening,
  • all ears,
  • mindful,
  • observant,
  • enraptured,
  • observing,
  • attentive,
  • Scrutinizing,
  • careful.
  •attentive, lively (adjective)
  • observant,
  • clever,
  • careful,
  • on the ball,
  • on the qui vive,
  • watchful,
  • fast on the draw,
  • vigilant,
  • circumspect,
  • on guard,
  • wide-awake,
  • all ears,
  • heedful,
  • intelligent,
  • spirited,
  • on the job,
  • switched on,
  • wise,
  • on the lookout,
  • active,
  • wary,
  • good hands,
  • perceptive,
  • wired,
  • jazzed,
  • on one's toes,
  • quick,
  • ready,
  • hip,
  • sharp,
  • bright,
  • psyched up,
  • cagey.
  •aware (adjective)
  • up on,
  • in the know,
  • perceptive.
  •bright (adjective)
  • Clear-headed.
  •cautious (adjective)
  • gingerly,
  • watchful,
  • attentive,
  • cautious,
  • prudent,
  • observant,
  • aware,
  • mindful,
  • careful,
  • heedful,
  • circumspect,
  • deliberate,
  • guarded,
  • wary.
  •defensive (adjective)
  • on guard.
  •enthusiastic (adjective)
  • keen.
  •intelligent (adjective)
  • bright,
  • clever.
  •ironic (adjective)
  • ironic.
  •lively (adjective)
  • animate,
  • vital,
  • mettlesome,
  • animated,
  • lively,
  • vigorous,
  • enthusiastic,
  • brisk,
  • active.
  •perky (adjective)
  • perky,
  • bright-eyed and bushy-tailed.
  •sharp (adjective)
  • quick-witted,
  • sharp.
  •unaware (adjective)
  • ignorant.
  •vigilant (adjective)
  • cautious,
  • scrupulous,
  • conscientious,
  • vigilant,
  • mindful,
  • strict,
  • heedful,
  • thoughtful,
  • provident,
  • ready,
  • finical,
  • careful,
  • sharp-eyed,
  • particular,
  • meticulous,
  • fastidious,
  • attentive,
  • thorough,
  • open-eyed,
  • fussy,
  • watchful,
  • responsible,
  • observant,
  • prudent,
  • prepared,
  • exacting,
  • precise,
  • regardful,
  • diligent,
  • guarded.
  •wakeful (adjective)
  • waking.
  •wide-awake (adjective)
  • psyched up,
  • fast on the draw.

• adv

  •moving (adverb)
  • astir.
  •paying attention (adverb)
  • on the ball.

• n.

  •
  • tell.
  •
  • put on guard.
  •
  • clearly,
  • sane,
  • lucid,
  • clear.
  •
  • keen,
  • attention,
  • smart,
  • clever,
  • Sharp-witted,
  • bright,
  • quick-witted,
  • regard.
  •
  • portend,
  • tocsin.
  •alarm (noun)
  • call,
  • signal,
  • buoy,
  • foghorn,
  • bell,
  • horn,
  • flare,
  • beacon,
  • semaphore,
  • whistle,
  • siren.
  •alert (noun)
  • alarm,
  • on the alert,
  • lidless,
  • intelligent,
  • argus-eyed,
  • aware,
  • perched,
  • qui vive,
  • fly,
  • alerting,
  • wakeful,
  • wide-awake,
  • perked,
  • watchful,
  • heads-up,
  • alarum,
  • vigilant,
  • sleepless,
  • alive,
  • conscious,
  • warning signal,
  • open-eyed.
  •communication (noun)
  • alerting.
  •indication (noun)
  • legend,
  • icon,
  • guidepost,
  • lighthouse,
  • sign,
  • hint,
  • crest,
  • denotation,
  • logo,
  • notation,
  • token,
  • designation,
  • key,
  • banner,
  • figuration,
  • emblem,
  • signpost,
  • indication,
  • marker,
  • badge,
  • pointer,
  • gesticulation,
  • insignia,
  • symbol,
  • logotype.
  •state (noun)
  • qui vive.
  •warning (noun)
  • caveat,
  • wink,
  • sign,
  • siren,
  • mayday,
  • warning,
  • admonition,
  • threat,
  • signal,
  • sos,
  • advisory,
  • alarm,
  • flap,
  • notice.

• v.

  •alarm (verb)
  • panic,
  • dismay,
  • startle,
  • surprise,
  • frighten,
  • scare,
  • shock.
  •caution (verb)
  • caution,
  • admonish,
  • warn,
  • Forewarn,
  • advise,
  • enjoin,
  • exhort.
  •communication (verb)
  • alarm.
  •indicate (verb)
  • indicate,
  • notify,
  • designate,
  • denote,
  • shrug,
  • prompt,
  • point out,
  • cue,
  • symbolize,
  • note,
  • gesticulate,
  • wink,
  • betoken,
  • gesture,
  • guide,
  • ticket,
  • stamp,
  • nudge,
  • point,
  • beckon,
  • brand,
  • mark,
  • flag,
  • label,
  • wave,
  • motion,
  • tag,
  • nod.
  •warn (verb)
  • put on guard,
  • give the high sign,
  • tip,
  • threaten,
  • flag,
  • inform,
  • alarm,
  • Forewarn,
  • wave flag,
  • notify.

• Other synonyms:

  •
  • fixedly,
  • alarm bell,
  • portend,
  • prepare,
  • attention,
  • immersion,
  • lucid.
  •
  • tocsin,
  • smart,
  • lost,
  • keenly,
  • clever,
  • concentrated,
  • clearly,
  • sane,
  • Sharp-witted,
  • keen.
  •
  • regard.
  •
  • clear.
  •caution
  • exhort,
  • give the high sign.
  •conscious
  • conscious,
  • sentient.
  •industrious
  • up-and-coming.
  •observant
  • perspicacious.
  •prudent
  • precautionary.
  •shrewd
  • nimble-witted.
  •wakeful
  • wakeful,
  • waking.
  •warn
  • give warning,
  • make aware.
  •Other relevant words:
  • precaution,
  • wrapped in,
  • earnest,
  • jaunty,
  • Keen-witted,
  • dashing,
  • peppy,
  • tonic,
  • chary,
  • warily,
  • dapper,
  • mesmerized,
  • refreshed,
  • intent on,
  • sound the alarm,
  • versatile,
  • intelligent,
  • deft,
  • demoralize,
  • clear,
  • precautionary,
  • fan,
  • adroit,
  • Riveted,
  • brilliant,
  • confide,
  • shrewd,
  • gingerly,
  • disposed,
  • understanding,
  • quick,
  • keen-sighted,
  • sensitive,
  • up-and-coming,
  • acute,
  • breezy,
  • bright,
  • ingenious,
  • decisive,
  • on guard,
  • let next to,
  • discriminating,
  • sentient,
  • hue and cry,
  • charily,
  • resourceful,
  • portend,
  • argus-eyed,
  • peaches-and-cream,
  • waking,
  • refreshful,
  • vivacious,
  • readiness,
  • live,
  • reactive,
  • merry,
  • reasonable,
  • rakish,
  • hurt,
  • psyched up,
  • disturbingly,
  • up,
  • erudite,
  • open,
  • awaken,
  • sos,
  • burglar alarm,
  • laconic,
  • agile,
  • clear-sighted,
  • preoccupied,
  • dangerously,
  • spry,
  • tip,
  • sage,
  • revive,
  • assiduous,
  • terrifyingly,
  • wave flag,
  • fleet,
  • on foot,
  • keen,
  • fearfully,
  • frightfully,
  • up and about,
  • sympathetic,
  • animate,
  • carefully,
  • ironic,
  • mayday,
  • gifted,
  • in the know,
  • eventful,
  • percipient,
  • discreet,
  • equal to,
  • wrapped,
  • preparedness,
  • disconcertingly,
  • guard,
  • au fait,
  • full of life,
  • nimble,
  • breathless,
  • fast,
  • playful,
  • alerting,
  • wailer,
  • rational,
  • cautiously,
  • hawk-eyed,
  • hypnotized,
  • notification,
  • astir,
  • existing,
  • precocious,
  • disquietingly,
  • appall,
  • savvy,
  • blinking light,
  • warble,
  • lost,
  • gong,
  • alarmingly,
  • Agoing,
  • switched on,
  • knowledgeable,
  • instant,
  • Sure-footed,
  • cant,
  • cry havoc,
  • fire,
  • open-eyed,
  • reprove,
  • punctual,
  • alarm bell,
  • startlingly,
  • watchfulness,
  • jazzed,
  • smart,
  • lookout,
  • circumspectly,
  • keenly,
  • buzz,
  • advised,
  • forewarning,
  • judicious,
  • wariness,
  • perked,
  • sensible,
  • openmouthed,
  • chipper,
  • rousing,
  • warning device,
  • considerate,
  • Ready-witted,
  • activate,
  • let in on,
  • alarm system,
  • fly,
  • instantaneous,
  • tip-off,
  • give warning,
  • coruscating,
  • afoot,
  • frisky,
  • look out,
  • natty,
  • rigorous,
  • unskillful,
  • on the job,
  • regard,
  • buzzer,
  • exceptional,
  • wired,
  • responsive,
  • gale warning,
  • pert,
  • slow,
  • distress signal,
  • clearly,
  • on the lookout,
  • give the high sign,
  • quick-witted,
  • insomniac,
  • lucid,
  • sane,
  • storm cone,
  • fixedly,
  • immersion,
  • ultrasmart,
  • awake to,
  • kindle,
  • stirring,
  • terrify,
  • gay,
  • niggling,
  • Danger-signal,
  • nimble-witted,
  • confide to,
  • eagle-eyed,
  • admonition,
  • airy,
  • scarily,
  • transfixed,
  • terror,
  • restless,
  • cagey,
  • dextrous,
  • on the watch,
  • on watch,
  • fast on the draw,
  • concentrated,
  • able,
  • informed,
  • sprightly,
  • sharp-sighted,
  • put next to,
  • clever,
  • arouse,
  • cognizant,
  • fright,
  • good hands,
  • close,
  • exasperate,
  • flap,
  • ignite,
  • supple,
  • delicate,
  • inattentive,
  • undistracted,
  • police whistle,
  • lidless,
  • admonishment,
  • peppery,
  • engaged,
  • communicative,
  • wakeful,
  • Yare,
  • anxiety,
  • hooter,
  • heads-up,
  • versed,
  • sulfurous,
  • jolly,
  • about,
  • on one's toes,
  • clearheaded,
  • cheerful,
  • keen-eyed,
  • searching,
  • advertent,
  • daunt,
  • occupied,
  • signal of distress,
  • tocsin,
  • witty,
  • summary,
  • guardedly,
  • excite,
  • unsleeping,
  • dreadfully,
  • frosty,
  • spirited,
  • awake,
  • in touch,
  • put on guard,
  • sparkling,
  • engaged in,
  • mercurial,
  • let know,
  • expeditious,
  • frighteningly,
  • finicky,
  • stimulate,
  • Intentive,
  • wise,
  • smart as a whip,
  • enlightened,
  • keep watch,
  • acquaint,
  • scintillating,
  • insightful,
  • penetrating,
  • hyperintelligent,
  • wide-awake,
  • up to,
  • swift,
  • aroused,
  • shockingly,
  • distressingly,
  • fire alarm,
  • Finicking,
  • nice,
  • horrify,
  • whisper,
  • perched,
  • qui vive,
  • breathe,
  • alertness,
  • fresh,
  • alive to,
  • in full swing,
  • perceptive,
  • predisposed,
  • eager,
  • Clear-headed,
  • mobile,
  • alive,
  • spruce,
  • all clear,
  • give notice,
  • canny,
  • wistful,
  • rouse,
  • make aware,
  • apprise,
  • lynx-eyed,
  • detailed,
  • jolt,
  • occupied with,
  • bright-eyed and bushy-tailed,
  • perspicacious,
  • semper paratus,
  • sensational,
  • conversant,
  • consternation,
  • apt,
  • cry wolf,
  • prepare,
  • ready for,
  • receptive,
  • warning signal,
  • watch,
  • zippy,
  • taken up with,
  • vigilance,
  • expectant,
  • give notice to,
  • unblinking,
  • on the alert,
  • on one's guard,
  • in on,
  • taking care,
  • go ahead,
  • cogitative,
  • appal,
  • skilful,
  • Sharp-witted,
  • discerning,
  • brainy,
  • avid,
  • festal,
  • immediate,
  • springy,
  • up for,
  • pronto,
  • briefed,
  • storm warning,
  • fiery cross,
  • cognisant,
  • alarum,
  • fear,
  • supersmart,
  • energetic,
  • crisp,
  • going,
  • deliberative,
  • minute,
  • sportive,
  • up on,
  • awfully,
  • astute,
  • inform,
  • on the ball,
  • tell,
  • rapid,
  • alarm signal,
  • incisive,
  • ready and willing,
  • painstaking,
  • perky,
  • gimlet-eyed,
  • politic,
  • awe,
  • dexterous,
  • attention,
  • invigorated,
  • give fair warning,
  • speedy,
  • incite,
  • spunky,
  • knowing,
  • hip,
  • stir up,
  • paying attention,
  • all ears,
  • intense,
  • fire bell,
  • conscious,
  • Roused,
  • prepared for,
  • appallingly,
  • on the qui vive,
  • Onto,
  • unhesitating,
  • sagacious,
  • sleepless,
  • agog,
  • alarm clock.

Antonyms for Alert:

• adj.

  • all
    unalert.
  • attentive, lively
    asleep, lethargic, lazy, indiscreet, foolish, ignorant, slow, thoughtless, incautious, drowsy, unintelligent, stupid, sluggish, weary, indifferent, careless, uneducated, unaware, dull, inattentive, unobservant, negligent.
  • Other antonyms:
    brainless, obtuse, idiotic, faraway, slow-witted, impetuous, lunatic, bold, lamebrain, unintentional, cuckoo, dense, dreaming, unknowing, dim-witted, leisurely, logy, indiscreet, insane, harebrained, balmy, half-baked, injudicious, softheaded, ignorant, crawling, inadvertent, senseless, asleep, incognizant, witless, imprudent, engrossed, featherheaded, dippy, boneheaded, nonsensical, imbecile, tardy, fool, indolent, pinheaded, dilatory, heavy, idle, thick-witted, brain dead, dillydallying, loony, unwise, dim, fatuous, unresponsive, unvigilant, sleeping, preposterous, unplanned, quiescent, tomfool, Weak-minded, Chuckleheaded, regardless, feebleminded, poky, inert, absurd, birdbrained, lagging, kooky, rash, poking, moronic, soft, quiet, Daffy, dragging, dormant, crackpot, sluggish, unintellectual, dorky, inconsiderate, unthinking, creeping, uneducated, unsmart, simple, mad, simpleminded, unintelligent, unprepared, unheeding, cockeyed, dunderheaded, wacky, daft, dreamy, zany, venturesome, unwitting, lunkheaded, screwball, crazy, unhurried, unready, nonintellectual, half-witted, laggard, slothful, illiterate, airheaded, doltish, thick, vacuous, untaught, nutty, lowbrow, opaque, thickheaded, bubbleheaded, dull, uninformed, dawdling, unwatchful, gormless, inactive, empty-headed, foolish, asinine, dumb, unmindful, daydreaming, sappy, dotty.

• Other antonyms:

  • n. t.
    absentmindedness, absorption, abstraction, absurd, airheaded, all clear, asinine, asleep, balmy, bold, boneheaded, brainless, carelessness, cockeyed, conceal, crawling, crazy, creeping, cuckoo, daft, dawdling, daydreaming, daze, dense, dilatory, dim, dim-witted, distraction, doltish, dormant, dotty, dragging, dreaming, dreamy, dull, dumb, empty-headed, engrossed, engrossment, faraway, fatuous, feebleminded, fool, foolish, half-baked, half-witted, harebrained, heedlessness, hide, idiotic, idle, ignorant, illiterate, imbecile, imperil, impetuous, imprudent, inactive, inadvertent, inattention, inattentiveness, inconsiderate, indiscreet, inert, injudicious, insane, kooky, laggard, lagging, languid, leisurely, listless, logy, loony, lowbrow, lull, lunatic, mad, moronic, nonintellectual, nonsensical, nutty, obliviousness, obtuse, opaque, poking, poky, preoccupation, preposterous, rash, regardless, risk, sappy, screwball, senseless, simple, sleeping, slothful, slow-witted, sluggish, soft, softheaded, tardy, thick, thickheaded, tomfool, unawareness, unconcerned, unconsciousness, uneducated, unheeding, unhurried, uninformed, unintelligent, unintentional, unknowing, unmindful, unobservant, unplanned, unprepared, unready, unresponsive, untaught, unthinking, unwise, unwitting, vacuous, venturesome, wacky, weary, witless, Chuckleheaded, Dallying, Inobservance, Weak-minded, crackpot, Daffy, dillydallying, thick-witted, unintellectual, dippy, lamebrain, pinheaded, simpleminded, birdbrained, bubbleheaded, dorky, dunderheaded, featherheaded, lunkheaded, unsmart, stupid, unacademic, lazyish, slowish, boobish, knuckleheaded, unbrilliant, brain-dead.

• v.

  • warn
    conceal, hide.