person who never learns their lesson; persistent jerk
Used to describe someone, typically male, who repeatedly makes the same mistakes or misbehaves without showing remorse or improvement. Often carries a tone of exasperation or criticism.
Late again? That guy really never learns, does he.
No matter how many times you warn him, he makes the same mistake. He's a persistent jerk.
Standard kanji-kana mixed spelling.
Kana spelling of 奴; slightly softer or more casual feel.
A set phrase combining the negative form of the verb 懲りる (to learn one's lesson) with the casual noun 奴 (guy, person). The expression is straightforward and its meaning is transparent from its components.