alert

definition: engaged in or accustomed to close observation
example: caught by a couple of alert cops
speech part: adjective
synonyms: watchful
definition: mentally perceptive and responsive
example: an alert mind
speech part: adjective
synonyms: alive awake
definition: quick and energetic
example:
speech part: adjective
synonyms: rattling
definition: an automatic signal (usually a sound) warning of danger
example:
speech part: noun
synonyms: alarm warning signal alarum
definition: a warning serves to make you more alert to danger
example:
speech part: noun
synonyms: alerting
definition: condition of heightened watchfulness or preparation for action
example: bombers were put on alert during the crisis
speech part: noun
synonyms: qui vive
definition: to warn or arouse to a sense of danger or call to a state of preparedness
example: I alerted them of the impending storm.
speech part: verb
synonyms: alarm

alert is explained and pronounced

How alert is being used?