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Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
keep an eye on
Grammar usage guide and real-world examplesUSAGE SUMMARY
"keep an eye on" is correct and usable in written English.
You can use this phrase to express that you are monitoring something. For example, "I'll keep an eye on the stock market and let you know if there are any big changes."
✓ Grammatically correct
News & Media
Wiki
Formal & Business
Alternative expressions(20)
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
60 human-written examples
Keep an eye on him.
News & Media
Keep an eye on Foxcatcher.
News & Media
Keep an eye on Florida.
News & Media
For details, keep an eye on Twitter.
News & Media
Keep an eye on this guy.
News & Media
Keep an eye on those puppies.
News & Media
Keep an eye on your thermostat.
News & Media
"Keep an eye on him for me".
News & Media
Keep an eye on HiTV.
News & Media
Keep an eye on that.
News & Media
But keep an eye on these folks.
News & Media
Expert writing Tips
Best practice
Use "keep an eye on" when you want to suggest a casual but attentive form of monitoring, suitable for situations where a constant, intensive focus isn't necessary but awareness is important.
Common error
Avoid using "keep an eye on" in contexts that require constant and detailed surveillance. It's more appropriate for situations where a general awareness is sufficient, not for scenarios demanding rigorous, continuous observation.
Linguistic Context
The idiomatic expression "keep an eye on" functions as a phrasal verb, indicating a direction to monitor or observe something. Ludwig AI validates this with numerous real-world examples from diverse sources.
Frequent in
Wiki
42%
News & Media
32%
Formal & Business
3%
Less common in
Science
23%
Reference
0%
Encyclopedias
0%
Ludwig's WRAP-UP
The phrase "keep an eye on" is a versatile and commonly used idiomatic expression that means to watch or monitor something carefully. It’s grammatically correct and suitable for various contexts, ranging from casual conversations to news reports. Ludwig AI confirms its usability and provides numerous examples. While generally neutral in tone, more formal situations might call for alternatives like "monitor" or "supervise". Its widespread presence in diverse sources, particularly in WikiHow and news outlets, underscores its relevance in everyday communication.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
watch over
Implies a sense of care and protection while observing.
keep watch
Suggests a more active and vigilant form of watching, often for potential threats.
monitor
A more formal and direct substitute, suitable for professional or technical contexts.
pay attention to
Focuses on directing one's awareness to something.
supervise
Implies authority and responsibility while overseeing something.
observe
A neutral term that emphasizes careful and systematic watching.
be on the lookout for
Implies actively searching for something specific while watching.
be vigilant
Emphasizes the need for alertness and watchfulness.
scrutinize
Suggests a critical and detailed examination while observing.
keep under surveillance
Suggests a discreet and often covert form of monitoring.
FAQs
How can I use "keep an eye on" in a sentence?
You can use "keep an eye on" to suggest monitoring something. For instance, "keep an eye on the baby while I'm in the kitchen" or "keep an eye on the market for any fluctuations".
What's a more formal alternative to "keep an eye on"?
Is "keep an eye on" appropriate for professional writing?
What's the difference between "keep an eye on" and "watch over"?
"Keep an eye on" generally means to observe something, while "watch over" often implies a protective element. You might "keep an eye on" a stock price, but you'd "watch over" a child to ensure their safety.
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