Used and loved by millions
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
spying on
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "spying on" is correct and usable in written English.
It can be used when referring to the act of secretly observing or monitoring someone or something, often without their knowledge. Example: "The detective was accused of spying on the suspect to gather evidence for the case."
✓ Grammatically correct
News & Media
Wiki
Alternative expressions(2)
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
Be careful who you spying on!
Wiki
Spying on the vehicular tunnel.
News & Media
"What?" "Stop spying on me".
News & Media
Spying on us".
News & Media
Spying on the Russians.
News & Media
They're spying on us.
News & Media
Spying on himself?
News & Media
Spying on dogs?
News & Media
S.E.A. members deny spying on Syrian civilians.
News & Media
"A chairman spying on her board?
News & Media
The Russians are spying on suburbia.
News & Media
Expert writing Tips
Best practice
When using "spying on" in your writing, ensure the context clearly indicates who is doing the spying and who or what is being spied upon to avoid ambiguity.
Common error
Be mindful of the negative connotations associated with "spying on". If you intend to convey a less intrusive form of observation, consider using alternatives like "monitoring" or "observing" to soften the tone.
Source & Trust
82%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "spying on" functions as a verb phrase, typically used to describe the action of secretly observing someone or something. As Ludwig AI confirms, the phrase follows standard grammar rules.
Frequent in
News & Media
70%
Wiki
15%
Formal & Business
5%
Less common in
Science
3%
Encyclopedias
3%
Reference
2%
Ludwig's WRAP-UP
In summary, "spying on" is a verb phrase that describes the act of secretly observing someone or something. As confirmed by Ludwig AI, the phrase is grammatically correct and very common in written English. Its usage spans various contexts, but it is most frequently found in News & Media. While the phrase itself has a neutral tone, the act of "spying on" carries strong negative connotations. When using this phrase, be sure to choose it intentionally for the appropriate tone, or choose a more appropriate alternative depending on the context, like "surveilling" or "monitoring".
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
surveilling
This alternative refers to the act of keeping someone or something under observation, often using electronic equipment.
monitoring
This option implies a regular check or observation of someone or something over a period of time.
keeping watch on
This phrase means to observe someone or something closely, often to protect them or maintain control.
observing secretly
This alternative describes the act of watching someone or something without being noticed.
secretly watching
The words order has been inverted to produce the same meaning, keeping in mind that the word "secretly" refers to the way the action is done.
keeping tabs on
This phrase means to monitor someone's activities or progress.
eavesdropping on
This option refers specifically to secretly listening to a conversation.
bugging
This alternative usually involves using electronic devices to listen secretly to conversations.
peeping on
This option refers to secretly looking at someone, often in a sexual context.
conducting surveillance
This alternative refers to the act of keeping someone under observation usually in a professional way.
FAQs
How can I use "spying on" in a sentence?
You can use "spying on" to describe the act of secretly watching someone. For example, "The government was accused of "spying on" its citizens".
What are some alternatives to "spying on"?
Depending on the context, you can use alternatives like "surveilling", "monitoring", or "observing secretly".
When is it appropriate to use "spying on"?
"Spying on" is appropriate when describing a clandestine or illicit act of observation. Be aware of its negative connotations and use it when the context involves secrecy and potential wrongdoing.
What's the difference between "spying on" and "monitoring"?
"Spying on" implies a hidden and often unethical observation, while "monitoring" suggests a more open or authorized form of observation. The choice depends on the context and the intent you want to convey.
Editing plus AI, all in one place.
Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
82%
Authority and reliability
4.5/5
Expert rating
Real-world application tested