1. Not either.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• neith,
• nneither,
• beirther,
• niether,
• anoither,
• neihter,
• eaither,
• raither,
• nother,
• neathers,
• eitheir,
• neitehr,
• neithia,
• noother,
• nitheir,
• neiher,
• eithor,
• eiather,
• neather,
• eiether

• nether,
• netter,
• neuter,
• Neathery,
• needer,
• neider,
• Nethery.

The adjective form of the word "neither" is "neither". While "neither" is commonly used as a determiner or pronoun, it can also be used as an adjective to describe two objects or people that are both not included or eligible for something. For example, "Neither option is suitable".

The plural form of the word "neither" is "neithers".

The plural of the "neither" can be the "neither".

The singular form of the word "neither" is "either"

The singular of the "neither" can be the "either".