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Definition of not

not

/nɑːt/
not

Plural:nots
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not Lexical Profile

not Game Scores & Validity

• adverb

1

Used with an auxiliary verb or 'be' to form the negative of a verb, clause, or sentence.

Example

"She did not attend the conference yesterday because her flight was delayed."


2

Used to negate a specific word, phrase, or quantifier rather than the entire clause, or to express a moderate degree by negating an adjective or adverb.

Example

"The instructions were not entirely clear to the new students."


3

Used as a short substitute for a negative clause following verbs of thinking, hoping, or believing.

Example

"When asked if the library would close early, the clerk replied that she hoped not."

Synonyms
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• noun

1

A unary logical operator or digital logic gate in Boolean algebra and electronics that inverts the truth value or binary state of its input.

Example

"Passing a high voltage signal through a NOT gate produces a low output."

Synonyms
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Word Nuance & Usage

Do not confuse with the homophone 'knot' (a fastening made by tying string or rope, or a unit of speed).

• Rhymes for not

Word Origin & Etymology

From Middle English not, a reduced unstressed form of nawiht or noht ('naught, nothing'), from Old English nāwiht, a compound of nā ('no, never') and wiht ('thing, creature, whit').

Usage Trend

Historical frequency of usage in published text.

180019102020

Cite this Entry


Wordmom. (2026). Definition of Not. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/not
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