nonmusical
1. [ adjective ] (music) lacking interest in or talent for music
Synonyms: unmusical
Examples:

"too unmusical to care for concerts" "it is unfortunate that her children were all nonmusical"

Related terms: musical
2. [ adjective ] (music) not musical in nature
Synonyms: dissonant unmusical
Examples:

"the unmusical cry of the bluejay"

Related terms: musical musicality