watchful, alert, sharp, observant, guarded, circumspect, attentive, wakeful, cautious, careful, wary, chary, on one's guard, on the alert, on the lookout, eagle-eyed, hawk-eyed, Argus-eyed, on the qui vive, on one's toes, with one's eyes open, Colloq with one's eyes skinned or peeled:
As long as we remain vigilant, they will never be able to take us by surprise.
be, keep, remain, stay | become
especially, extra, extremely, particularly, very | constantly, ever
The organization is ever vigilant for threats to the habitats of birds.
Be extra vigilant about what you eat or drink.
You need to be vigilant against garden pests.
Random quote: Important principles may, and must, be inflexible.: Abraham LincolnLatest queries: curtail, hardly, piles, jacket, vortex, pride, self-help, garbanzo, libelous, bandmaster, trellis, installment, he, aficionado, instructors, several, curbside, vulgar, english muffin, vigilant,