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Synonyms

watch out

British  

verb

  1. (intr, adverb) to be careful or on one's guard

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

noun

  1. a less common word for lookout

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
watch out Idioms  

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

What to watch out for: This will be England's second World Cup semi-final since 2018, but defending champions Argentina stand in the Three Lions' way of a first appearance in the final in 60 years.

From BBC Jul. 12, 2026

The ’80s, ’90s and 2000s are rightly at 8, 9 and 10, but watch out, ’70s on 7, you’re hanging by a thread.

From The Wall Street Journal Jul. 9, 2026

During a heat wave, there are three conditions to watch out for: dehydration; heat exhaustion, which can be characterized by headaches and nausea; and the more serious heatstroke.

From MarketWatch Jun. 30, 2026

But if you do go out, watch out for one beloved theater chain’s terrible new feature.

From Slate Jun. 26, 2026

He pulled a pocket watch out his jacket, tapped it, and said, “Time’s a-wasting.”

From "The Journey of Little Charlie" by Christopher Paul Curtis

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