A loud argument or quarrel, often used in British English to mean a fight or disagreement.
British slang with uncertain origins, possibly from Cockney rhyming slang 'Barney Rubble' (from The Flintstones cartoon) rhyming with 'trouble,' though the word predates the show. Some sources suggest it may come from a proper name associated with quarreling.
If 'barney' really comes from Cockney rhyming slang via The Flintstones, it's a hilarious example of how cartoon characters can accidentally slip into real language—imagine finding out a swear word came from an animated sitcom!
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