Definitions

1. adjective

Musical or art that is without a tonal system or a tonal centre, or that rejects the traditional rules of tonal harmony.

“The avant-garde composer’s atonal work was a challenging experience for the orchestra.”

2. noun

A musical composition that is atonal.

“The concert featured a series of atonal pieces by experimental composers.”

3. adverb

Without a tonal centre or system.

“The atonal melody wandered aimlessly through the key of C minor.”