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.
If the releases and the full-route polish catch up to the size/speed combo, watch out. Eddie Brown, San Diego Union-Tribune, 14 Apr. 2026 Traders will also watch out for March's import and export price indexes. Lisa Kailai Han, CNBC, 14 Apr. 2026 Drivers in the area are advised to watch out for detours on Market Street to Ninth Street to Joe Bendel Way. Chilekasi Adele, CBS News, 13 Apr. 2026 Following growing degree days, rather than the calendar, can tell plants’ caretakers when to watch out for pests and when to act against them. Beth Botts, Chicago Tribune, 11 Apr. 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 20 Apr. 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