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English definition of “cannot”

cannot

modal verb     /ˈkæn.ɒt/ US  /-ɑːt/
A1 the negative form of the verb "can": I cannot predict what will happen next year.Forbidding and banning things cannot but formal used to say that something will certainly happen: If we persevere, we cannot but succeed.CertaintyConfidence and self-assurance
(Definition of cannot modal verb from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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