Synonyms of alert in English:

alert


See definition of alert

adjective

1‘police have asked neighbours to be alert after a spate of burglaries in the area’

SYNONYMS

vigilant, wide awake, aware, watchful, attentive, observant, circumspect, wary, chary, heedful, canny

on the lookout, on one's guard, on one's toes, all ears, keeping one's eyes open, keeping one's eyes peeled, keeping a weather eye open, on the qui vive

ANTONYMS

inattentive

2‘she continued to paint in old age in order to remain mentally alert’

SYNONYMS

quick-witted, sharp, bright, quick, keen, perceptive, wide awake, responsive, agile, acute, astute

informal on the ball, on one's toes, quick off the mark, quick on the uptake, all there, with it, bright-eyed and bushy-tailed

ANTONYMS

slow


noun

1‘the army called for a state of alert’

SYNONYMS

vigilance, watchfulness, carefulness, attentiveness, guardedness, care, caution, cautiousness, wariness, chariness, alertness, circumspection, prudence, heedfulness, heed, mindfulness

ANTONYMS

carelessness

2‘a flood alert has been issued’

SYNONYMS

warning, caution, notification, notice, exhortation, injunction

siren, alarm, signal, danger signal, distress signal


verb

1‘police were alerted by a phone call from the house’

SYNONYMS

warn, notify, apprise, caution, put on one's guard, forewarn, put on the qui vive, arouse

informal tip off, clue in, put in the picture, put wise