/ˈmænərɪzəm/
man·ner·ism
BrE /ˈmænərɪzəm/
NAmE /ˈmænərɪzəm/
[C]
a particular habit or way of speaking or behaving that sb has but is not aware of
nervous/odd/irritating mannerisms
[U]
too much use of a particular style in painting or writing
Mannerism [U]
a style in 16th century Italian art that did not show things in a natural way but made them look strange or out of their usual shape