atonalism

[ ey-tohn-l-iz-uh m ]
/ eɪˈtoʊn lˌɪz əm /

noun Music.

a note, phrase, etc., that seems harsh or discordant.

Origin of atonalism

First recorded in 1925–30; atonal + -ism
Related formsa·ton·al·ist, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019