Definition of neither (Entry 2 of 4) : not the one or the other of two or more. neither. adjective.

Is both and neither the same?

We use neither with a singular noun. We use neither of with a plural noun. We use a singular verb with neither and neither of. ... We use both with a plural noun.

Is neither of the two correct?

Neither, which means “not either of two things,” is grammatically singular. In formal writing, use singular verbs like is with neither to indicate “not the one or the other” of two possibilities. Neither of us has/have a suit.