noun
obstinacy of old age; stubbornness in old people
Refers to the inflexible, stubborn attitude often associated with elderly people. Used as a set phrase.
祖父は老いの一徹で、新しいスマホを使おうとしない。
My grandfather, with the obstinacy of old age, refuses to use a new smartphone.
老いの一徹という
They say old people are stubborn, and my father absolutely won't change his opinion.