Children's, Intermediate and Advanced Online English Dictionary & Thesaurus

Comprehensive
Dictionary Suite
Help
Help
Help
 
   
Display options
Show syllables
Show Lookup History
Double-Click Lookup
  Show Spanish support
 
Pronunciation
Wordsmyth
  Phonics
  IPA
 
Entry formats
Standard
  Classic
 
Lookup History
alert

a·lert

alert

 
pronunciation:
luhrt
parts of speech:
adjective, noun, transitive verb
features:
Word History, Word Explorer
part of speech: adjective
definition: keenly attentive or responsive; quick to perceive.
The alert infant held up her head and fixed her eye on the dangling toy.If the driver had not been alert, he would certainly have hit the deer.She hadn't slept well and wasn't very alert at the meeting.
 
synonyms:
attentive, keen, perceptive, ready, sharp, wide-awake
antonyms:
abstracted, dopey, faraway, inattentive, stupid
similar words:
agile, astir, awake, aware, clearheaded, guarded, knowing, lively, observant, on guard, on the ball, quick, quick-witted, responsive, swift, vigilant, watchful
 
part of speech: noun
definition: a warning or a period of warning, as of severe weather or military attack.
They interrupted the television program for a severe storm alert.We stayed in the basement until the tornado alert was over.
synonyms:
alarm, signal, warning
similar words:
admonition
 
part of speech: transitive verb
inflections: alerted, alerting, alerts
definition: to warn or give notice of an emergency or other impending event.
The mayor alerted the citizens that they were in danger from the hurricane.The principal's office alerted the parents to the fact that their daughter was using drugs.Pain is a signal that alerts the brain to injury or illness.The electric company sends out a notice to alert you of an impending shutoff.
synonyms:
notify, warm
similar words:
alarm, inform, tell, wake, warn
derivations: alertly (adv.), alertness (n.)
Word History
The English word alert comes from a l'erte, an early French phrase that means "on guard" or "on the watch." This French phrase came from an Italian military phrase, all'erta. Erta means "a high or raised place," such as a hilltop or tower soldiers might use to see the enemy coming from a distance. All'erta meant "standing on the high tower."
Word Explorer
See
  care, rodent