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On the alert, as for danger or error; watchful. See Synonyms at careful.

[Middle English, from Old French, from Latin vigilāns, vigilant-, present participle of vigilāre, to be watchful; see vigilante.]

vig′i·lant·ly adv.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adv.1.vigilantly - in a watchful mannervigilantly - in a watchful manner      


[ˈvɪdʒɪləntlɪ] ADVvigilantemente


advaufmerksam; patrolwachsam
References in classic literature ?
It was not to be expected that our travellers could pass unseen through a region thus vigilantly sentineled; accordingly, in the edge of the evening, not long after they had encamped at the foot of the Bighorn Sierra, a couple of wild-looking beings, scantily clad in skins, but well armed, and mounted on horses as wild- looking as themselves, were seen approaching with great caution from among the rocks.
Each day he spent from an hour to two hours in the cage, watching the rehearsing, with nothing for him and Jack to do save stand vigilantly on guard.
Reach not after morality and righteousness, my friends; watch vigilantly your stomach, and diet it with care and judgment.
The man who travelled, loud-stepping, the direct line to the cabin door, he let alone--though he watched him vigilantly until the door opened and he received the endorsement of the master.
But, eyes no less rapacious had watched the growth of the Mounds in years bygone, and had vigilantly sifted the dust of which they were composed.
She at once set it down as a falsehood, and returned to her own window to keep watch over North Shingles more vigilantly than ever.
No company, a walk, a family dinner of four, and an evening of looking over books and pictures; Miss Murdstone with a homily before her, and her eye upon us, keeping guard vigilantly.
There was no time to inquire to what this exclamation, which was delivered in a very rapturous tone, referred; for he had already thrown open the door of the room; into which Nicholas, followed by Smike with the bundle on his shoulder (he carried it about with him as vigilantly as if it had been a sack of gold), straightway repaired.
The fire has not been idle," returned the trapper, keeping his eye vigilantly employed in profiting by those glimpses of the horizon, which the whirling smoke offered to his examination.
He shuffled athwart, keeping one eye ahead vigilantly.
BHAKKAR -- The construction work of District Headquarters (DHQ) hospital's emergency block was being monitored vigilantly and directions have also been given to concerned departments for its completion within next two months period.
He said Pakistan was ready to work with Afghanistan to manage the two countries' border more vigilantly and prevent any illegal movement.