Negates the meaning of the modified verb. / To no degree. / (understatement, litotes) Used to indicate the opposite or near opposite, often in a form of understatement.

And not.

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

Alternative letter-case form of NOT

Socially unacceptable.

(idiomatic) Worthless.

Emphasizes that a particular claim or idea makes no difference regarding what can or has happened. / A sardonic response to a new event that contradicts what the speaker has just stated.

(Singapore, Malaysia, colloquial) Final interrogative particle, forming a yes/no question from a declarative statement.

(especially in the past) To not have the required information.

Used before stating something that the speaker believes to be correct