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alert

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Adjective alert has 4 senses
  1. alert - very attentive or observant; "an alert and responsive baby is a joy"; "caught by a couple of alert cops"; "alert enough to spot the opportunity when it came"; "constantly alert and vigilant, like a sentinel on duty"
    Antonyms:
    unalert, inattentive, unobservant, unvigilant, unwatchful
  2. alert - mentally responsive; "an alert mind"
    Antonyms:
    unintelligent, stupid (indirect, via intelligent)
  3. alert, awake - not unconscious; especially having become conscious; "the patient is now awake and alert"
    Antonym: unconscious (indirect, via conscious)
  4. alert, alive, awake - (usually followed by `to') showing acute awareness; mentally perceptive; "alert to the problems"; "alive to what is going on"; "awake to the dangers of her situation"; "was now awake to the reality of his predicament"
    Antonym: unaware (indirect, via aware)
Noun alert has 3 senses
  1. alert, qui vive - condition of heightened watchfulness or preparation for action; "bombers were put on alert during the crisis"
    --1 is a kind of readiness, preparedness, preparation
    --1 has particulars: air alert; red alert; strip alert
    Derived form: verb alert1
  2. alert, alerting - a warning serves to make you more alert to danger
    --2 is a kind of warning
    --2 has particulars: Emergency Alert System, EAS
    Derived form: verb alert1
  3. alarm, alert, warning signal, alarum - an automatic signal (usually a sound) warning of danger
    --3 is a kind of signal, signaling, sign
    --3 has particulars:
     torpedo; air alert; burglar alarm; fire alarm; foghorn, fogsignal; horn; red flag; siren; tocsin, alarm bell
    Derived form: verb alert1
Verb alert has 1 sense
  1. alarm, alert - warn or arouse to a sense of danger or call to a state of preparedness; "The empty house alarmed him"; "We alerted the new neighbors to the high rate of burglaries"
    --1 is one way to warn
    Derived forms: noun alert1, noun alert3, noun alert2
    Sample sentences:
    Somebody ----s somebody
    Something ----s somebody
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