Keep an eye on vs Watch

When to use each in English, with meaning, register, and examples.

Keep an eye on

Top 2,000 (common)

Watch

Top 1,000 (very common)A1verb
Most common: Watch
 Keep an eye onWatch
Pronunciation🇬🇧 //kiːp ən aɪ ɒn//🇺🇸 //kip ən aɪ ɑn//🇬🇧 /["/wɒtʃ/","/ˈwɒtʃɪz/","/wɒtʃt/","/ˈwɒtʃɪŋ/"]/🇺🇸 /["/wɑːtʃ/","/ˈwɑːtʃɪz/","/wɑːtʃt/","/ˈwɑːtʃɪŋ/"]/
Meaningto watch or pay attention to someone or somethingTo look at something for a period of time.
ExampleCan you keep an eye on the kids while I cook?I love to watch movies on the weekends.
RegisterNeutralNeutral
How commonTop 2,000 (common)Top 1,000 (very common)
CEFR level-A1
Part of speechverb
Collocationskeep an eye on someone, keep an eye on something, keep a close eye oncarefully, closely, attentively, could only, continue to, pause to, for, from, in, sit and watch, stand and watch, watch and wait
Antonymsignore, neglectignore, overlook, neglect
Common mistakesConfusing with 'watch over', which means to protect instead of just monitor., Using in overly formal situations where simpler phrases would work better.'Watched' vs 'watching': confusing past and present forms., 'Watch' is not used with 'something': saying 'watch something' instead of just 'watch'., Using 'watch' for inanimate objects like books, instead of 'read'.
Usage notesUse in contexts where you need to monitor someone or something. More casual than 'observe'.Used for looking at moving images or events. More formal contexts may use 'view' instead, while 'watch' is appropriate in casual conversations. Avoid using in highly formal writing.

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Keep an eye on
Watch

Frequently asked questions: Keep an eye on vs Watch

What's the difference between Keep an eye on and Watch?

Keep an eye on: to watch or pay attention to someone or something Watch: To look at something for a period of time.

Which is more common: Keep an eye on and Watch?

Watch is the most common in everyday English.

Can you show an example of each?

Keep an eye on: Can you keep an eye on the kids while I cook? Watch: I love to watch movies on the weekends.

Can I use Keep an eye on and Watch interchangeably?

Not always. Keep an eye on and Watch are related and overlap in some contexts, but they differ in register, how common they are, and usage, so swapping one for another can change the meaning or tone. Check the differences above before substituting.

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