mannerism

Short definition from Wiktionary

Noun

1. 1
   A noticeable personal habit, a verbal or other (often, but not necessarily unconscious) habitual behavior peculiar to an individual.
2. 2
   Exaggerated or affected style in art, speech, or other behavior.
3. 3
   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.
4. 4
   In fine art, a style that is inspired by previous models, aiming to reproduce subjects in an expressive language.
5. 5
   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.