耳あかが固くなってしまいました。

ear; hearing; edge; crust; selvedge (non-fray machined edge of fabrics); selvage

subfamily

indicates sentence subject (occasionally object); indicates possessive (esp. in literary expressions); but; however; still; and

hard; solid; tough; stiff; tight; wooden; unpolished (e.g. writing); strong; firm (not viscous or easily moved); safe; steady; honest; steadfast; obstinate; stubborn; bookish; formal; stuffy

to become; to get; to grow; to be; to reach; to attain; to result in; to prove to be; to consist of; to be composed of; to succeed; to be complete; to change into; to be exchanged for; to play a role; to be promoted; to do ...