watch out

verb

watched out; watching out; watches out

intransitive verb

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

Examples of watch out in a Sentence

watch out for hazards in the road
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Bahia is also where breakfast is served each morning—watch out for the cheeky birds who will steal any of your unattended banana pancakes or breakfast burritos. Condé Nast, Condé Nast Traveler, 16 May 2026 Each puzzle has exactly one solution, so watch out for words or items that seem to belong to multiple categories! Mark Cooper, New York Times, 15 May 2026 However, cold isn't the only element to watch out for. Heather Bien, Southern Living, 13 May 2026 Another thing to watch out for is non-traditional payment requests like sending money through peer-to-peer payment apps. Mahsa Saeidi, CBS News, 12 May 2026 See All Example Sentences for watch out

Word History

First Known Use

1845, in the meaning defined above

Time Traveler
The first known use of watch out was in 1845

Browse Nearby Words

Cite this Entry

“Watch out.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/watch%20out. Accessed 18 May. 2026.

Kids Definition

watch out

verb
: to be on the lookout
watch out for cars

More from Merriam-Webster on watch out

Love words? Need even more definitions?

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

More from Merriam-Webster