vigilant Synonyms

watchful wary wakeful on the qui vive circumspect observant careful aware open-eyed argus-eyed alert ready prudent waker quick-sighted waking vigilance surveillant sleepless sheltering sharp regardful not missing a trick watchman on one's guard wakesome unsleeping overprotective on the lookout on the job on guard all ears patrilineal leery beady-eyed keen-eyed sharp-eyed wide-awake provident protective perceptive focused enrapt eagle-eyed defensive custodial conservational close circumspective chary