ALERT


Meaning of ALERT in English

■ adjective quick to notice and respond to potential danger or problems.

↘intellectually active.

■ noun

1》 the state of being ~: everyone should be on the ~ for terrorists.

2》 a warning of danger.

3》 a prompt or similar signal on an electronic device.

■ verb warn of a danger or problem.

Derivatives

~ly adverb

~ness noun

Origin

C16 (orig. in military use): from Fr. ~e , from Ital. all' erta 'to the watchtower'.

Concise Oxford English vocab.      Сжатый оксфордский словарь английского языка.