rustic and stubborn; boorishly obstinate
Describes a person who is rough, unsophisticated, and stubbornly sticks to their coarse ways. Often used critically or self-deprecatingly.
彼は無骨一徹な職人で、新しいやり方を絶対に受け入れない。
He is a boorishly stubborn craftsman who absolutely refuses to accept new methods.
無骨一徹な態度が災いして、彼は同僚から煙たがられている。
His boorish and obstinate attitude backfired, and he is shunned by his colleagues.
Standard kanji spelling; 無骨 means 'boorish' and 一徹 means 'stubborn'.
Variant using 武 (martial) instead of 無 (without); less common.
Compound of 無骨 (boorish, rustic) and 一徹 (stubborn, obstinate). The exact historical derivation is uncertain, but the combination emphasizes a person who is both uncouth and stubbornly set in their ways.