〜まま

まま
noun; particle
as is, unchanged
1. as is, as it is
Indicates something remains in its current state.
Please wait as you are.
To tell it as it is.
It's the same as before.
To eat raw.
To say what you think.
2. while (in a state)
Indicates doing something while in a particular state.
I slept with the window open.
Don't come in with your shoes on.
I ate while standing.
I went out with the lights on.
I spoke while sitting.

〜まま indicates that a state continues unchanged, often implying it was left that way or is still in that condition.

GRAMMAR PATTERNS:

COMMON EXPRESSIONS:

NUANCE:
Often implies that the unchanged state is problematic or unusual: 電気(でんき)つけたまま()かけた (went out leaving the lights on).