Avant-garde – art and artists ahead of their time
The advanced guard (avant-garde) were guarding a head (ahead of their time).
Avant-garde artists' methods and styles are very original or modern in comparison to the period in which they live — they are the "leading edge" or "advance guard".
Examples of avant-garde in a sentence
Avant-garde art, music, theatre and literature is very modern and experimental.
The exhibition of avant-garde paintings did not impress most of the older visitors.
She is a member of the avant-garde — her sculptures are bold and futuristic.