Either: Definition of either determiner in Oxford Advanced

Definition of either determiner in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more. 4 meanings: 1. a. one or the other (of two) b. (as pronoun) 2. both one and the other 3. used preceding two or more.... Click for more definitions. Either is a determiner, a pronoun, an adverb or a conjunction. It implies exclusivity, meaning that both options cannot be selected simultaneously. Use of either with more than two (mutually exclusive) options remains common informally, [2] but a usage prescription against it is so widely known that it is usually avoided formally.