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English definition of “not know the meaning of the word”

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not know the meaning of the word

If you are talking about a quality or an activity and you say that someone doesn't know the meaning of the word, you mean they do not have that quality or have no experience of that activity: Work? He doesn't know the meaning of the word! And the irony of Phil talking about ethics. He doesn't know the meaning of the word.
(Definition of not know the meaning of the word from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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