vigilant

[ vij-uh-luhnt ]
/ ˈvɪdʒ ə lənt /

adjective

keenly watchful to detect danger; wary: a vigilant sentry.
ever awake and alert; sleeplessly watchful.

Origin of vigilant

1470–80; < Latin vigilant- (stem of vigilāns), present participle of vigilāre to be watchful. See vigil, -ant

SYNONYMS FOR vigilant

2 wide-awake, sleepless.

ANTONYMS FOR vigilant

1 careless.

synonym study for vigilant

2. See alert.

OTHER WORDS FROM vigilant

WORDS THAT MAY BE CONFUSED WITH vigilant

vigilant vigilante

Words nearby vigilant

vigil light, vigil mass, vigilambulism, vigilance, vigilance committee, vigilant, vigilante, vigilantism, vigilius, vigintillion, vigneron

British Dictionary definitions for hyper-vigilant

vigilant
/ (ˈvɪdʒɪlənt) /

adjective

keenly alert to or heedful of trouble or danger, as while others are sleeping or unsuspicious

Derived forms of vigilant

vigilantly, adverb vigilantness, noun

Word Origin for vigilant

C15: from Latin vigilāns keeping awake, from vigilāre to be watchful; see vigil