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
a rotten apple
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "a rotten apple" is correct and usable in written English.
It is often used metaphorically to describe a person or thing that negatively affects a group or situation. Example: "In any organization, one rotten apple can spoil the morale of the entire team."
✓ Grammatically correct
News & Media
Science
Academia
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
46 human-written examples
After all, it does seem a little peculiar for the man who called Balotelli "a rotten apple" to sign him just a month later.
News & Media
A rotten apple will contaminate the environment".
News & Media
It's sadly a rotten apple situation," Mr. Spencer said.
News & Media
It's like a rotten apple in a basket.
News & Media
Residents marched in protest with placards that read "New York sent us a rotten apple".
News & Media
He is a rotten apple and could infect every group where he goes, even Milan".
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
14 human-written examples
The Democratic party's founding chairman, Martin Lee, poured scorn on the idea that the two or three candidates would offer voters a meaningful choice, asking those at a Sunday night pro-democracy rally: "W's the difference between a rotten orange, rotten apple and a rotten banana?
News & Media
"This is not just an incident of a few rotten apples on an otherwise pristine tree".
News & Media
For instance, if you were writing about a bad love affair, a title like "Rotten Apple" might get any readers off in the mood you want.
Wiki
Politicians on both sides of the aisle long insisted the scandals could be traced to a few rotten apples in an otherwise healthy barrel; a few radicals worry that the barrel itself (the capitalist system) is rotten.
News & Media
"It's wrong for the funeral industry to say it's a matter of a few rotten apples," she said.
News & Media
Expert writing Tips
Best practice
When using "a rotten apple" metaphorically, ensure the context clearly establishes the group or system being negatively affected. Provide specific examples to illustrate the detrimental impact.
Common error
While "a rotten apple" is widely understood, it can sound too informal in academic or professional contexts. Opt for more precise and neutral language, such as "corrupting influence" or "source of instability".
Source & Trust
85%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "a rotten apple" functions primarily as a noun phrase, often used metaphorically. As Ludwig AI confirms, it describes a person or thing that exerts a negative influence within a group or system. Many examples show how it signifies a source of corruption or negativity.
Frequent in
News & Media
78%
Science
12%
Academia
10%
Less common in
Formal & Business
0%
Encyclopedias
0%
Wiki
0%
Ludwig's WRAP-UP
In summary, the phrase "a rotten apple" is a common noun phrase used metaphorically to describe a negative influence within a group or system. Ludwig AI confirms its grammatical correctness and frequent usage across diverse contexts. While commonly found in news and media, it's essential to consider the level of formality when choosing this phrase for academic or professional writing. When the situations need an alternative there are some options such as "a bad influence" or "a corrupting element". Remember to use this expression precisely, ensuring that the negative impact and affected group are clearly defined.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
a bad influence
Focuses on the impact of someone's actions on others, rather than their inherent character.
a corrupting element
Highlights the way in which something pure or good is tainted by the presence of something negative.
a negative example
Emphasizes the use of someone's failures as a lesson for others.
a troublemaker
Focuses on a person who causes problems or difficulties.
a disruptive force
Highlights the way something interferes with the normal functioning of a system or group.
a cancer
Implies a destructive presence that spreads and consumes everything around it.
a liability
Highlights the burden or disadvantage that something or someone represents.
a flaw in the system
Focuses on a defect or weakness that compromises the integrity of a larger structure.
a source of contamination
Emphasizes the way in which something becomes impure or harmful through contact with something else.
a discordant note
Highlights something inconsistent with its surroundings
FAQs
How can "a rotten apple" affect a team?
Just like a single rotten apple can spoil the whole barrel, one negative person or element can damage team morale, productivity, and overall performance. It's important to address such issues promptly to prevent them from spreading.
What are some alternatives to "a rotten apple"?
You can use alternatives like "a bad influence", "a corrupting element", or "a negative example" depending on the context.
In what kind of situations can I use the expression "a rotten apple"?
The expression "a rotten apple" is often used to describe a person, thing or situation that negatively affects a larger group or organization. This can be applicable to a team, a community, or even a political system.
Is it correct to say "a few rotten apples"?
Yes, the plural form "a few rotten apples" is also a common expression. It usually refers to a small number of individuals or elements that are causing problems within a larger group. The phrase is often used to minimize the severity of a broader issue.
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
85%
Authority and reliability
4.5/5
Expert rating
Real-world application tested