Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun air_alert

3 senses of air alert

Sense 1
air alert -- (the time period during which military and civilian agencies are prepared for an enemy air attack)
       => time period, period of time, period -- (an amount of time; "a time period of 30 years"; "hastened the period of time of his recovery"; "Picasso's blue period")

Sense 2
air alert -- (the condition in which combat aircraft are airborne and ready for an operation; "aircraft in the Mideast are on air alert")
       => alert, qui vive -- (condition of heightened watchfulness or preparation for action; "bombers were put on alert during the crisis")

Sense 3
air alert -- (the warning signal that begins a period of preparation for an enemy air attack)
       => alarm, alert, warning signal, alarum -- (an automatic signal (usually a sound) warning of danger)