borrowing without returning; keeping something borrowed
Describes the state of having borrowed something and not yet returned it, often with a nuance of neglect or irresponsibility. Commonly used with 〜にする or 〜だ.
He borrowed a book from me and hasn't returned it.
It's not good to keep things you've borrowed without returning them.
Standard kanji-kana spelling.
Variant with 放し; less common but still seen.
Compound of 借り (continuative form of 借りる 'to borrow') + っぱなし (suffix indicating a state left as is, often with negative nuance).