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Words related to alert

a·lert
A a

  • yellow alert

    (in military or civilian defense) the first alert given when enemy aircraft are discovered approaching a military installation, city, coastline, etc. Compare blue alert, red alert, white alert.

  • blue alert

    (in military or civilian defense) an alert following the first, or yellow, alert, in which air attack seems probable.

  • red alert

    (in military or civilian defense) the most urgent form of alert, signaling that an enemy attack is believed to be imminent.

  • white alert

    (in military or civilian defense) an all-clear signal, directive, etc., indicating that the danger of air raid no longer exists.

  • amber alert

    a notification to the general public, such as by commercial radio or electronic traffic-condition signs, regarding an abduction of a child

  • sharp

    having a thin cutting edge or a fine point; well-adapted for cutting or piercing: a sharp knife.
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