quick to notice any unusual and potentially dangerous or difficult circumstances; vigilant.
able to think clearly; intellectually active.
the state of being watchful for danger:
forces placed on alert.
an announcement or signal warning of danger:
a bomb alert.
a period of vigilance in response to such a warning:
traffic was halted during the alert.
warn (someone) of a danger, threat, or problem, typically with the intention of having it avoided or dealt with:
he alerted people to the dangers of smoking
police were alerted after three men drove away without paying.
on the alert
vigilant and prepared.
, alert, animadvert, assert, avert, Bert, blurt, Burt, cert, chert, concert, controvert, convert, curt, desert, dessert, dirt, divert, exert, flirt, girt, hurt, inert, insert, introvert, Kurt, malapert, overt, pert, pervert, quirt, shirt, skirt, spirt, spurt, squirt, Sturt, subvert, vert, wort, yurt
•Engelbert • Colbert • sweatshirt
•nightshirt • pay dirt • Frankfurt
•miniskirt • underskirt • expert
•Blackshirt • redshirt • T-shirt
•Brownshirt • undershirt • extrovert
•ragwort • milkwort • pillwort
•nipplewort • lungwort • bladderwort
Alert (əlûrt´), settlement, on Ellesmere Island, extreme N Nunavut Territory, Canada, on the Arctic Ocean. It is the most northerly permanent settlement in the world. The settlement has a radio and meteorological station and a landing strip operated jointly by Canada and the United States.