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. Either is a determiner, a pronoun, an adverb or a conjunction. It implies exclusivity, meaning that both options cannot be selected simultaneously. Definition of either determiner in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more. Learn how to use either as a determiner, pronoun, correlative conjunction or adverb in English. See definitions, examples and tips for each function of either .
