tone deafness
to·ne·deaf·ness
noun
1.
an inability to distinguish differences in pitch
Origin
From tone-deaf + -ness.
Related words
Broader terms
WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.