either


either
either [ē′thər, ī′thər]
adj.
[ME < OE æghwæther < a (æ), always (see AY) + gehwæther, each of two (see WHETHER): akin to, and of same formation as, OHG eogihwedar]
1. one or the other (of two) [use either hand]
2. each (of two); the one and the other [he had a tool in either hand]
pron.
one or the other (of two)
conj.
the first element of the pair of disjunctive correlatives eitheror, implying a choice of alternatives [either go or stay ]: eitheror is sometimes used to refer to more than two, although this use is objected to by some [bring either cookies, doughnuts, or some other kind of pastry]
adv.
1. any more than the other; also: used after negative expressions [if you don't go, I won't either]
2. Informal certainly; indeed: used as an intensifier in a negative statement [It's mine.” “It isn't either!]

English World dictionary. . 2014.

Synonyms:
(of two) / (of several) / (of two), ,