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English definition of “not that I know of”

not that I know of

used when answering a question to mean that, judging from the information you have, the answer is no: "Is she especially unhappy at school?" "Not that I know of."Yes, no and not
(Definition of not that I know of from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

Translations of “not that I know of”

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