leaving something out; leaving something on
Describes the state of having taken something out or turned something on and then leaving it that way, often with a nuance of carelessness or neglect. Commonly used as 出しっぱなしにする or 出しっぱなしだ.
Don't leave your toys out; put them away.
I fell asleep with the book left out.
Standard kanji-kana spelling.
Variant with 放し; less common but seen.
Compound of 出し (continuative form of 出す 'to take out') + っぱなし (suffix meaning 'leaving as is').