Avant-garde (noun)

1. New and experimental ideas and methods in art, music, or literature, typically characterized by a disregard for tradition and a willingness to take risks.
2. A group of people actively promoting and introducing new and experimental ideas and methods.

Origin:

From french avant-garde, from avant (before) + garde (guard).

Examples:

1. The artist's work was ahead of its time and considered avant-garde.
2. The avant-garde movement challenged conventional artistic norms.
3. The avant-garde film was met with mixed reviews.
4. The group of musicians formed an avant-garde ensemble.
5. The avant-garde fashion designer was known for her unconventional designs.