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Definitions of alert

  1. an automatic signal (usually a sound) warning of danger Scrapingweb Dictionary DB
  2. a warning serves to make you more alert to danger Scrapingweb Dictionary DB
  3. condition of heightened watchfulness or preparation for action; "bombers were put on alert during the crisis" Scrapingweb Dictionary DB
  4. An alarm from a real or threatened attack; a sudden attack; also, a bugle sound to give warning. Webster Dictionary DB
  5. The lookout; a guarding against surprise; as, to be on the alert. The Winston Simplified Dictionary. By William Dodge Lewis, Edgar Arthur Singer. Published 1919.
  6. Alertness. The Concise Standard Dictionary of the English Language. By James Champlin Fernald. Published 1919.
  7. Alertly. The Concise Standard Dictionary of the English Language. By James Champlin Fernald. Published 1919.
  8. 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" Scrapingweb Dictionary DB
  9. mentally responsive; "an alert mind" Scrapingweb Dictionary DB
  10. Watchful; vigilant; active in vigilance. Webster Dictionary DB
  11. Brisk; nimble; moving with celerity. Webster Dictionary DB
  12. On the watch; active; brisk; ready; vigilant. The Winston Simplified Dictionary. By William Dodge Lewis, Edgar Arthur Singer. Published 1919.
  13. Watchful: brisk. The american dictionary of the english language. By Daniel Lyons. Published 1899.
  14. On the watch; ready. The Clarendon dictionary. By William Hand Browne, Samuel Stehman Haldeman. Published 1894.
  15. Watchful; brisk. Upon the alert, upon the watch. Nuttall's Standard dictionary of the English language. By Nuttall, P.Austin. Published 1914.
  16. Watchful; on one's guard; sprightly; nimble. Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.

Usage examples for alert

  1. He won't risk another attempt, now that he is aware we are on the alert – The Green Mummy by Fergus Hume
  2. Her eyes were brown, alert and fun- loving, her manner quick, and her speech enthusiastic. – Abroad with the Jimmies by Lilian Bell
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