nontonal

adjective
non·​ton·​al | \ ˌnän-ˈtō-nᵊl How to pronounce nontonal (audio) \

Definition of nontonal

: not tonal: such as
a music : not having or based in a particular key : atonal nontonal music
b linguistics : not using pitch to express differences of meaning between words nontonal languages

First Known Use of nontonal

1922, in the meaning defined above

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