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| a·lert [ ə lúrt ] |
adjective |
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| Definition: |
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1. watchful: watchful and ready to deal with whatever happens
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2. mentally lively: clear-headed and responsive
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noun (plural a·lerts) |
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| Definition: |
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1. warning of danger: an alarm or warning of danger
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2. time of danger: a period of time during which an alert remains in force
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transitive verb (past and past participle a·lert·ed, present participle a·lert·ing, 3rd person present singular a·lerts) |
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| Definition: |
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warn somebody: to make somebody aware of a possible danger or difficulty
  Police have alerted the public to the danger.
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| [Late 16th century. Via French alerte< Italian all'erta "on the lookout"] |
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| a·lert·ly adverb |
| a·lert·ness noun |
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on the alert watchful and ready to deal with whatever happens
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