Definition of “I'll be hanged if I know” - English Dictionary

british dictionary

“I'll be hanged if I know” in British English

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I'll be hanged if I know

also I'm hanged if I know UK old-fashioned informal

used to say that you certainly do not know

(Definition of “I'll be hanged if I know” from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

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