Meaning of NEITHER in English
/ ˈnaɪðə(r); NAmE ; ˈniːðə(r)/ determiner , pronoun , adverb
■ determiner , pronoun
not one nor the other of two things or people :
Neither answer is correct.
Neither of them has / have a car.
They produced two reports, neither of which contained any useful suggestions.
'Which do you like?' 'Neither. I think they're both ugly.'
used to show that a negative statement is also true of sb/sth else :
He didn't remember and neither did I.
I hadn't been to New York before and neither had Jane .
'I can't understand a word of it.' ' Neither can I .'
( informal )
'I don't know.' ' Me neither .'
neither ... nor ... used to show that a negative statement is true of two things :
I neither knew nor cared what had happened to him.
Their house is neither big nor small.
Neither the TV nor the video actually work / works.
neither / either
After neither and either you use a singular verb:
Neither candidate was selected for the job.
Neither of and either of are followed by a plural noun or pronoun and a singular or plural verb. A plural verb is more informal:
Neither of my parents speaks / speak a foreign language.
When neither... nor... or either... or... are used with two singular nouns, the verb can be singular or plural. A plural verb is more informal.
Middle English : alteration (by association with either ) of Old English nawther , contraction of nāhwæther (from nā no + hwæther whether ).
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005