Definition of "whether"
- conjunction
Introducing a direct interrogative question (often with correlative or) which indicates doubt between alternatives.
Used to introduce an indirect interrogative question that consists of multiple alternative possibilities (usually with correlative or).
Without a correlative, used to introduce a simple indirect question; if, whether or not.
Used to introduce a disjunctive adverbial clause which qualifies the main clause of the sentence (with correlative or).
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