Definitions

1. adverb

not one or the other of two things mentioned

“I don’t like either of those options, neither is suitable.”

2. conjunction

used to indicate that something is not one or the other of two things mentioned, typically after ‘not’ or ‘nor’

“I don’t like either of those options, nor do I like the third.”

3. noun

the one who or that which is neither of two things

“neither of the two candidates is suitable for the job”