tin ear

English Thesaurus

1. insensitivity to the appropriateness or subtlety of language (noun.attribute)

hypernym	:	insensitiveness, insensitivity,
definition	:	the inability to respond to affective changes in your interpersonal environment (noun.attribute)

2. an inability to distinguish differences in pitch (noun.state)

hypernym	:	deafness, hearing loss,
definition	:	partial or complete loss of hearing (noun.state)