watch out

watched out; watching out; watches out

Definition of watch out

intransitive verb

: to be vigilant or alert : be on the lookout you'd better watch out watch out for the tree!

First Known Use of watch out

1845, in the meaning defined above

Keep scrolling for more

Learn More about watch out

Time Traveler for watch out

Time Traveler

The first known use of watch out was in 1845

See more words from the same year

Statistics for watch out

Cite this Entry

“Watch out.” The Dictionary, Merriam-Webster Inc., Accessed 5 December 2019.

Keep scrolling for more

More from Merriam-Webster on watch out

Rhyming Dictionary: Words that rhyme with watch out

Nglish: Translation of watch out for Spanish Speakers

Britannica English: Translation of watch out for Arabic Speakers

Comments on watch out

What made you want to look up watch out? Please tell us where you read or heard it (including the quote, if possible).


to accept, comply, or submit

Get Word of the Day daily email!

Test Your Vocabulary

Semantic Drift Quiz

  • a twisty river
  • Which of the following was once a synonym for fun?
Spell It

Can you spell these 10 commonly misspelled words?

Syn City

Test Your Knowledge - and learn some interesting things along the way.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!