From Longman Dictionary of Contemporary Englisheitherei‧ther1 /ˈaɪðə $ ˈiːðər/ ●●● S1 W1 conjunction → either ... or
Examples from the Corpus
either• Either eat some more, or take some of those meatballs home with you.• You can choose either french fries, baked potato, or mashed potatoes.eithereither2 ●●● S1 W1 determiner, pronoun 1 UNCERTAINone or the other of two things or people → any There’s tea or coffee – you can have either. We can offer a comfortable home to a young person of either sex.either of Could either of you lend me five pounds?2 used to show that a negative statement is true about both of two things or people → neither I’ve lived in New York and Chicago, but don’t like either city very much.either of There were two witnesses but I wouldn’t trust either of them.3 → either side/end/hand etc4 → either way5 → could go either wayGRAMMAR: Singular or plural verb?• You use either before a singular noun, with a singular verb: Either explanation is possible. • You use either of before a plural pronoun or a plural noun: I don’t believe either of them.• In formal speech and writing, you use a singular verb: Has either of them called yet?• In informal speech and writing, people often use a plural verb: Have either of them called yet?Examples from the Corpus
either• There are gas stations at either end of the block.• Do you have insurance on either one of these cars?• Sandy's brothers were standing on either side of her.eithereither3 ●●● S1 W2 adverb 1 [in negatives]BOTH used to show that a negative statement is also true about another thing or person, or to add a different negative statement about something or someone → neither I haven’t seen the movie and my brother hasn’t either (=he also has not seen it). ‘I can’t swim.’ ‘I can’t either.’ It’s not an easy car to drive, and at $40,000 it’s not cheap either.2 → me eitherExamples from the Corpus
either• "Didn't she tell you her name?" "No, and I didn't introduce myself, either."• "I didn't know you could go skiing in Hawaii." "I didn't either."• Sir Bernard never recovered from the loss either.• The big bucks have not changed her life much either, Brandt avers.• But you can't eat him either, sir! 