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 turncoat
Grammar usage guide and real-world examplesUSAGE SUMMARY
"a turncoat" is correct and usable in written English. You can use it to describe someone who betrays their allegiance or loyalty to a group or cause. Example: "After years of loyalty, he became a turncoat and joined the opposing party." Alternative expressions include "traitor" and "defector."
✓ Grammatically correct
News & Media
Political Commentary
Historical Analysis
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
54 human-written examples
And he wasn't a turncoat.
News & Media
You're a turncoat.
News & Media
Felix regarded him as a turncoat, much as Bill regarded Felix as a turncoat.
News & Media
"Better to die a turncoat than a Mafioso," he said.
News & Media
The Workers Partyy radicals denounced him as a turncoat.
News & Media
His legacy will be that of a turncoat".
News & Media
The alt-right sees him as a turncoat.
News & Media
Instead he alleges that Rosemond himself is a "turncoat rat".
News & Media
"I don't want to be perceived as a turncoat," Tobias said.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
2 human-written examples
"Maybe I was regarded as a turncoat by this guy.
News & Media
Facing life imprisonment on murder and racketeering charges, Anthony Salvatore Casso agreed in 1994 to become a turncoat witness for the government in exchange for a lenient sentence.
News & Media
Expert writing Tips
Best practice
The phrase is particularly effective in political or ideological narratives to highlight a dramatic shift in loyalty.
Common error
Avoid using "a turncoat" when the emphasis is solely on the harm caused by the betrayal. While a turncoat is a type of traitor, the word specifically evokes the act of 'turning one's coat'—literally showing a different uniform color—to represent a visible change in alliance.
Source & Trust
98%
Authority and reliability
5/5
Expert rating
Real-world application tested
Linguistic Context
As a noun phrase, "a turncoat" typically functions as a subject complement or a direct object in a sentence. It serves as a classifying label for an individual. Ludwig AI identifies this structure as standard and grammatically sound across all documented instances.
Frequent in
News & Media
85%
Political Commentary
10%
History & Biographies
5%
Less common in
Science
1%
Technical Documentation
1%
Social Media
3%
Ludwig's WRAP-UP
The phrase "a turncoat" is a robust and evocative noun phrase used to identify someone who has abandoned their group or principles for an opposing side. Ludwig AI data reveals that it is Very common in high-prestige journalism, particularly when discussing political shifts, historical figures like Benedict Arnold, or sports rivalries. With an expert rating of 5.0, it is confirmed as a grammatically correct and stylistically effective choice. While similar to "a traitor", it uniquely highlights the visible act of changing alliances. Writers should employ it when they wish to focus on the transition from one loyalty to another.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
a traitor
implies a broader act of betrayal against a country or cause, often with harmful intent
a defector
more technical, specifically used when someone leaves one country or organization for an opposing one
a renegade
suggests someone who rejects conventional behavior or abandons a group to act independently
a betrayer
a more general term for someone who breaks a trust or confidence
a double-crosser
emphasizes the element of deceit and trickery involved in the betrayal
an apostate
specifically used for someone who renounces a religious or political belief
a quisling
a highly specific historical term for a traitor who collaborates with an invading enemy
a backstabber
a more informal and emotional term for personal betrayal
a deserter
implies the act of abandoning a duty or post, particularly in a military context
a collaborator
focuses on the act of working with the enemy rather than just leaving the original group
FAQs
How to use "a turncoat" in a sentence?
You can use it to label a person who has switched sides, for example: "After the scandal, the senator was labeled "a turncoat" by his former supporters."
What can I say instead of "a turncoat"?
You can use alternatives like "a traitor", "a defector", or "a renegade" depending on the context.
Is "a turncoat" a formal or informal term?
The term is generally neutral to formal. It is frequently found in high-quality journalism like "The New York Times" and "The Economist".
What is the difference between "a turncoat" and "a defector"?
While both describe leaving a group, "a defector" is often a more neutral or official term for someone fleeing a country, while "a turncoat" carries a more pejorative connotation of shifting loyalty for convenience.
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
98%
Authority and reliability
5/5
Expert rating
Real-world application tested