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English definition of “tax”

tax

verb [T] (NEED EFFORT)    /tæks/
to need someone to make a lot of effort, either physical or mental: He only has to read a short report - it shouldn't tax him unduly.Complicated and difficult to doDifficult to understand
(Definition of tax verb (NEED EFFORT) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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