expression, ichidan verb
mellow; soften with maturity
Describes a person's personality becoming gentler, less rigid, or more approachable through experience or age. Often used positively.
年を取って、彼はだいぶ角が取れた。
As he got older, he mellowed quite a bit.
あの先生も最近は角
That teacher has also softened lately and become kinder to students.