Meaning of “no kidding” in the English Dictionary

british dictionary

"no kidding" in British English

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no kidding

also I kid you not informal

really or honestly:

No kidding, there were about 200 people at the party.

(Definition of “no kidding” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"no kidding" in American English

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no kidding

really or honestly:

No kidding, there were about a hundred people at Latisha's party.

(Definition of “no kidding” from the Cambridge Academic Content Dictionary © Cambridge University Press)