ALERT', adjective
1. Watchful; vigilant; active in vigilance. hence the military phrase, upon the alert upon the watch, guarding against surprise or danger.
2. Brisk; nimble; moving the celerity.
Webster's Dictionary 1828
ALERT', adjective
1. Watchful; vigilant; active in vigilance. hence the military phrase, upon the alert upon the watch, guarding against surprise or danger.
2. Brisk; nimble; moving the celerity.