We have put together a list of words that are similar to MANNERISM.

9 Alternative Words Similar to mannerism

1 Affectation Noun      Synonym Words Like Affectation
2 Pose Noun      Synonym Words Like Pose
3 Affectedness Noun      Synonym Words Like Affectedness
4 Feigning Noun      Synonym Words Like Feigning
5 Pretence Noun      Synonym Words Like Pretence
6 Pretending Noun      Synonym Words Like Pretending
7 Pretense Noun      Synonym Words Like Pretense
8 Simulation Noun      Synonym Words Like Simulation
9 Attitude Noun      Hyponym Words Like Attitude

10 definitions of mannerism

1 Adherence to a peculiar style or manner; a characteristic mode of action, bearing, behavior, or treatment of others.
2 Adherence to a peculiar style or manner carried to excess, especially in literature or art.
3 a behavioral attribute that is distinctive and peculiar to an individual
4 a deliberate pretense or exaggerated display
5 A distinctive behavioral trait; an idiosyncrasy.
6 Exaggerated or affected style or habit, as in dress or speech. See Synonyms at affectation.
7 An artistic style of the late 16th century characterized by distortion of elements such as scale and perspective.
8 Monotonous, formal, or pedantic adherence to the same manner; uniformity of manner, especially a tasteless uniformity, without freedom or variety; excessive adherence to a characteristic mode or manner of action or treatment.
9 A peculiarity of manner in deportment, speech, or execution; an exceptionally characteristic mode or method; an idiosynerasy.
10 A group of verbal or other unconscious habitual behaviors peculiar to an individual.
We get our data from many different dictionaries across the web:
Wordnik, Wiktionary, Century, American Heritage, Gcide