Structure
Verb[stem]+ っぱなし
Details
Standard
Rare Kanji
放し
About っぱなし
っぱなし is a suffix that originally comes from the う - Verb 放す 'to let loose'. When attached to the conjunctive form of verbs, it is used to indicate that something has been 'left' in a certain state. っぱなし is almost exclusively used negatively.
Fun Fact
Although 放す means 'to let loose', っぱなし conveys a feeling that is closer to 'being unchecked'. This means っぱなし can be used to convey that 'the act of (A)' is continuing without anyone there to stop it, or that the 'state of (A)' is continuing without anyone there to stop it. Which meaning is conveyed will depend mostly on the (A) verb.
Related
Vocab Coverage
All Bunpro Vocab that appears on this item.
Examples
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誰かがそのドアを開けっ放しにした。
Someone left the door open.
ライトをつけっ放しにしないで。
Don't leave the light on.
電話が鳴りっ放しだけど…大丈夫?
Your phone keeps ringing... Is that not a problem?
いつも開けっ放しで、ちゃんと閉めてよね。
You always leave it open, make sure you close it ok?
水を出しっ放しにするのはやめてください。
Please stop leaving the water on.
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Self-Study Sentences
Online
「っぱなし」「まま」
日本語の森
How to use 〜ぱなし
MaggieSensei
Offline
Tae Kim's Japanese Grammar Guide
Page 297
Tobira
Page 359
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っぱなし – Grammar Discussion
Most Recent Replies (13 in total)

Asher
Hi there, just to confirm, what actually were you looking for? The full Engish translation, or the nuance of the Japanese?
Edit - It seems this was maybe in relation to the commercial posted? In that case, the nuance in all of them is that the person did it accidentally or unintentionally when something else happened that interrupted them completing the action.

Pipster
Sorry for the slow reply
I was wondering what the object (or subject) of those verbs would be.
For example, the other full phrases I imagine might be:
•(冷蔵庫のドアを)開けっぱなし
•(水を(?))流しっぱなし
•(エアコンを)かけっぱなし
•(電気を)つけっぱなしEdit - and yes, that’s right - this is referring to the AC advert

Asher
In that case you are exactly right .