[Middle English, alteration of Old English nauther, from nā not, no1 + hwǣther which of two, whether]
neither2pron
not the one or the other of two
neither of us
Neither, like either, should be followed by a verb in the singular when it is the subject of a sentence: Neither of them was caught. If two or more particular things or people are being mentioned, neither is followed by nor, not by or: Neither Janet nor her sister is coming (see neither3). Both pronunciations (ʹniedhə and ʹneedhə) are acceptable: British English tends to prefer the former and American English the latter
neither3conj
used with nor1: not either
neither here nor there
neither4adv
similarly not; also not; = nor2
‘I can't understand it.’ ‘Neither can I’
archaic or dialect either
I saw Mark Antony offer him a crown – yet ’twas not a crown neither – ’twas one of these coronets — Shakespeare