not
adverb
[ nɒt ]
• used with an auxiliary verb or ‘be’ to form the negative.
• "he would not say"
• used as a short substitute for a negative clause.
• "maybe I'll regret it, but I hope not"
• used to express the negative of other words.
• "not a single attempt was made"
• used in understatements to suggest that the opposite of a following word or phrase is true.
• "the not too distant future"
not
noun
• a Boolean operator with only one variable that has the value one when the variable is zero and vice versa.
not
adjective
• (of paper) not hot-pressed, and having a slightly textured surface.
Origin:
Middle English: contraction of the adverb nought.
