出でっ放ぱなし

noun

left on; left running; constantly out; always appearing

Describes something that remains in a state of being out, on, or away without stopping. Often used for water left running, lights left on, or a person who is always out of the house or constantly in the public eye.

• 水すい道どうを出でっ放ぱなしにしてしまった。

  I accidentally left the water running.

• 彼かれは一いち日にち中じゅう出でっ放ぱなしで、家いえにいない。

  He's out all day and never at home.