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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
be fooled by that
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "be fooled by that" is correct and usable in written English.
It can be used when warning someone not to be deceived or misled by something or someone. Example: "Don't be fooled by that flashy advertisement; the product is not as good as it seems."
✓ Grammatically correct
News & Media
Opinion
Politics
Alternative expressions(4)
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
22 human-written examples
Don't be fooled by that magnifying glass.
News & Media
Do not be fooled by that waistline.
News & Media
Don't be fooled by that victory in Sofia.
News & Media
But don't be fooled by that Mr Nice Guy guff.
News & Media
"Let's not be fooled by that old 'it's another Vietnam' canard".
News & Media
Don't anyone be fooled by that shiny new 09 number plate.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
38 human-written examples
I can't believe you idiots were fooled by that!
News & Media
Holland had beaten Denmark 3-0 the night before, but nobody was fooled by that scoreline.
News & Media
Although I am not surprised that the Dell Computer Corporation advertises a free year of America Online membership and a free year of technical support with its new computer systems ("Computers: Workhorses, Show Horses," State of the Art, Nov. 16), I am a bit surprised that your columnist was fooled by that advertising.
News & Media
With ICBMs, the main weakness of missile-defense systems is that they can be fooled by decoys that can be released in the near-vacuum of space and travel with the ICBM.
News & Media
Don't be fooled by diets that claim to use special calorie-burning devices.
News & Media
Expert writing Tips
Best practice
Use the phrase in situations where a level of naivety or trust is being exploited. This adds impact to the warning and makes it more relatable.
Common error
Avoid using "be fooled by that" in highly formal writing, such as academic papers or official reports. Opt for more sophisticated synonyms like "be deceived by that" or "be misled by that" to maintain a professional tone.
Source & Trust
87%
Authority and reliability
4.1/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "be fooled by that" serves as a warning or caution against being deceived or tricked. It functions as an idiomatic expression to alert someone to potential misdirection. Ludwig confirms its validity.
Frequent in
News & Media
50%
Opinion
25%
Science
25%
Less common in
Wiki
0%
Formal & Business
0%
Encyclopedias
0%
Ludwig's WRAP-UP
In summary, "be fooled by that" is a valid idiomatic phrase used to warn against deception. Ludwig confirms its correctness and provides examples from reputable sources like The New York Times and The Guardian. While grammatically sound, it's best suited for neutral to informal contexts. For more formal writing, alternatives like "be deceived by that" are preferable. Be mindful of overuse, and always ensure the context clearly identifies the misleading element.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
be deceived by that
Formal synonym, suggesting intentional misleading.
be misled by that
Implies being guided in the wrong direction, whether intentionally or not.
fall for that
Informal way of saying someone was tricked or believed something false.
be tricked by that
Suggests a deliberate act of deception.
be taken in by that
Emphasis on being charmed or persuaded into believing something.
swallow that
More colloquial, implying gullibility.
buy that
Informal, suggesting acceptance of a falsehood or dubious claim.
be hoodwinked by that
Emphasizes being deceived in a clever or cunning way.
be duped by that
Highlights the feeling of being foolishly tricked.
be played by that
Modern slang, suggesting manipulation.
FAQs
What does "be fooled by that" mean?
The phrase "be fooled by that" means to be deceived or tricked by something or someone, often despite warnings or indications to the contrary. It's a cautionary statement against being naive or gullible.
How can I use "be fooled by that" in a sentence?
You can use "be fooled by that" to warn someone about a potential deception. For example, "Don't "be fooled by that" advertisement; the product is not as good as it seems."
What can I say instead of "be fooled by that"?
You can use alternatives like "be deceived by that", "be misled by that", or "fall for that" depending on the context.
Is it okay to use "be fooled by that" in formal writing?
While grammatically correct, "be fooled by that" is generally more suitable for informal or neutral contexts. In formal writing, consider using more sophisticated synonyms such as "be deceived by that" or "be misled by that".
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Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
87%
Authority and reliability
4.1/5
Expert rating
Real-world application tested