(1):

(a.) Consisting in the absence of something; not positive; negative.

(2):

(a.) Implying privation or negation; giving a negative force to a word; as, alpha privative; privative particles; - applied to such prefixes and suffixes as a- (Gr. /), un-, non-, -less.

(3):

(n.) That of which the essence is the absence of something.

(4):

(a.) Causing privation; depriving.

(5):

(n.) A term indicating the absence of any quality which might be naturally or rationally expected; - called also privative term.

(6):

(n.) A privative prefix or suffix. See Privative, a., 3.