nei·ther (nēthər, nī-)
Not one or the other; not either: Neither shoe feels comfortable.
Not either one; not the one or the other: Neither of the twins is here. Neither will do. Neither of them is incorrect.
1. Not either; not in either case. Used with the correlative conjunction nor: Neither we nor they want it. She neither called nor wrote. I got neither the gift nor the card.
2. Also not: If he won't go, neither will she.
Similarly not; also not: Just as you would not, so neither would they.
[Middle English, from Old English nāwther, nāhwæther (influenced by æghwæther, ægther, either) : nā, not; see ne in the Appendix of Indo-European roots + hwæther, which of two; see kwo- in the Appendix of Indo-European roots.]
Usage Note: According to the traditional rule, neither is used only to mean "not one or the other of two." To refer to "none of several," none is preferred: None (not neither) of the three opposition candidates would make a better president than the incumbent. · The traditional rule also holds that neither is grammatically singular: Neither candidate is having an easy time with the press. However, it is often used with a plural verb, especially when followed by of and a plural: Neither of the candidates are really expressing their own views. · As a conjunction neither is properly followed by nor, not or, in formal style: Neither prayers nor curses (not or curses) did any good. See Usage Notes at either, every, he1, none, nor1, or1.
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2018 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
The American Heritage Dictionary Blog
Check out our blog, updated regularly, for new words and revised definitions, interesting images from the 5th edition, discussions of usage, and more.
American Heritage Dictionary Products
The American Heritage Dictionary, 5th Edition
The American Heritage Dictionary of Idioms
The American Heritage Roget's Thesaurus
Curious George's Dictionary
The American Heritage Children's Dictionary
The American Heritage Dictionary of Indo-European Roots
The American Heritage Student Grammar Dictionary
The American Heritage Desk Dictionary + Thesaurus
The American Heritage Science Dictionary
The American Heritage Dictionary of Business Terms
The American Heritage Student Dictionary
The American Heritage Essential Student Thesaurus