WordValekeep an eye on
to watch carefully
In more detail
1. (idiom) to watch or monitor someone or something carefully, especially to make sure they are safe or behaving properly
2. (idiom) to pay attention to something because you are interested in it or want to know about it
Examples
- Can you keep an eye on my bag while I go to the bathroom?
- I'm keeping an eye on flights to Paris because I want to book a trip soon.
How to use keep an eye on
This is an informal but widely used phrasal expression meaning to watch something or someone with attention and care. It can imply either protective vigilance (watching children) or interested monitoring (following developments). It is more casual than 'monitor' and more personal than 'observe', and suggests ongoing attention rather than a single glance.
Common phrases
- keep an eye on the children
- keep an eye on the situation
- keep an eye on the door
- keep an eye on prices
- keep an eye on your belongings
Synonyms
watch · monitor · observe · look out for · pay attention to
Opposites
ignore · overlook · disregard
A common mistake
Learners sometimes say 'keep eyes on' instead of 'keep an eye on', forgetting the indefinite article; the phrase specifically uses the singular 'eye' even when multiple people are watching.
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