Mannerism (noun)

1. A distinctive behavioral characteristic, habit, or style of an individual or group.
2. A particular manner or way of doing something.

Origin:

From manner + -ism.

Examples:

1. The artist's work is characterized by its unique mannerisms.
2. His speaking mannerism made it hard for the audience to understand him.
3. The mannerism of the dancers was inspired by traditional folk dance.
4. The writer's mannerism of using long, complex sentences.
5. His mannerism of constantly tapping his foot was annoying to others.