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!

Synonyms of watch out

• guard (against)
• look out (for)
• beware (of)
• notice

Examples of watch out in a Sentence

watch out for hazards in the road

Recent Examples on the Web

Guenther's research focused solely on WhatsApp and Signal due to their widespread use and robust infrastructure, but these aren't the only apps to watch out for. — Justyn Newman, PC Magazine, 9 Sep. 2026

These are the new signings to watch out for in the Premier League’s matches over the next few days. — Cerys Jones, New York Times, 5 Sep. 2026

Grab your fedora and watch out for snakes as EW ranks all five Indiana Jones movies. — Frank Deruggiero, Entertainment Weekly, 3 Sep. 2026

And look towards the horizon, forget countries and watch out for rebels… or learn about all that in the trailer. — Georg Szalai, HollywoodReporter, 2 Sep. 2026

Word History

First Known Use

1845, in the meaning defined above

Rhymes for watch out

• about
• bailout
• blackout
• blowout
• breakout
• burnout
• buyout
• checkout
• closeout
• cutout
• devout
• dropout

Kids Definition

watch out

verb

: to be on the lookout

watch out for cars