The Britannica Dictionary
mobile search
Home
Ask the Editor
Word of the Day
Quizzes
Core Vocabulary
Browse the Dictionary
×
Britannica Homepage
Ask the Editor
Word of the Day
Quizzes
Core Vocabulary
Browse the Dictionary
The Britannica Dictionary
red alert
1 ENTRIES FOUND:
red alert
(noun)
red alert
noun
plural
red alerts
red alert
noun
plural
red alerts
Britannica Dictionary definition of RED ALERT
:
a warning that there is great danger
[
count
]
—
usually singular
The commander issued a
red alert
.
A
red alert
was sounded on the island as the storm approached.
[+] more examples
[-] hide examples
[+] Example sentences
[-] Hide examples
[
noncount
]
The troops have been put
on red alert
.
[+] more examples
[-] hide examples
[+] Example sentences
[-] Hide examples
ASK THE EDITOR
In what ways is the word 'fish' used as singular and plural?
See the answer »
QUIZZES
Vocabulary Quiz
Test your word power
Take the Quiz »
Name That Thing
Take our visual quiz
Test Your Knowledge »
WORD OF THE DAY
egotist
:
a person who has the feeling or belief that they are better, more important, more talented, etc., than other people
Learn More »