A noticeable personal habit, a verbal or other (often, but not necessarily unconscious) habitual behavior peculiar to an individual. / Exaggerated or affected style in art, speech, or other behavior.

(art, literature) In literature, an ostentatious and unnatural style of the second half of the sixteenth century. In the contemporary criticism, described as a negation of the classicist equilibrium, pre-Baroque, and deforming expressiveness.

plural of mannerism

(art) A style of art developed at the end of the High Renaissance, characterized by the deliberate distortion and exaggeration of perspective and especially the elongation of figures.

plural of Mannerism

well-mannered

A surname from Norman.

plural of Manner

A surname.

(archaic, idiomatic) in the very act; red-handed.