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English definition of “whether”

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whether

conjunction uk   /ˈweð.ər/ us    //
B1 (used especially in reporting questions and expressing doubts) if, or not: I wasn't sure whether you'd like it. She asked me whether I was interested in working for her. I'm wondering whether to have the fish or the beef. I doubt whether it'll work. I was merely questioning whether we have the money to fund such a project. It all depends on whether or not she's got the time. Anyway, it's a good story, whether or not it's true.whether...or B1 (used to introduce two or more possibilities) it is not important if: I'm going, whether she likes it or not. Someone's got to tell her, whether it's you or me. Let's face it - you're going to be late whether you go by bus or train.
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(Definition of whether from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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