What is the meaning of Not?

Negates the meaning of the modified verb.

To no degree.

Used to indicate the opposite or near opposite, often in a form of understatement.

Used before a determiner phrase, a pronominal phrase etc. to convey a negative attitude (e.g. denial, sadness, anger) towards something.

Used before a non-finite clause (especially a gerund-participial clause) or less commonly a determiner phrase to ironically convey some attitude (e.g. surprise, incredulity, amusement, embarrassment) towards something.

And not.

Used to indicate that the previous phrase was meant sarcastically or ironically.

An instance of using the word “not”; a negation or denial.

Alternative letter-case form of NOT (unary operation on logical values that changes true to false, and false to true).

swim

to invite

invitation

not (negates the accompanying verb)

not (to no degree, extent, or way)

nothing, nought

nobody, no person

Contraction of ne woot; not to know.

a net, seine

a groove (as used in a tongue and groove joint)

alternative form of nøtt (nut)

a sign; mark; a mark made on an object

net, seine

night

dry wind from the south

Alternative form of anot to swim

swim, swimming

A groove.

seine net

imperative of note

Only used in nottun

use

note, a character, variously formed, to indicate the length of a tone, and variously placed upon the staff to indicate its pitch.

strong/weak nominative/accusative neuter singular of no

note

pound (sterling)

note.

a short message; note.

a formal message from a country to another country’s embassy.

seine

North

a short message; note

grade, score

knot

Nasal mutation of dot.

Source: wiktionary.org