She tried to turn away from him, but he slipped his arms under her.

"Someone must have seen who slipped that paper under the door."

I got home late and found it slipped under the door.

Someone slipped it under the door while I was gone.

Then it had simply slipped under her door, and what of that?

I opened the door and slipped my hand under his arm.

And one day she found a letter slipped under her door.

Slipping a hand under the bottom box, she felt the heat.

I slipped a note under his door, asking him to call me.

He found it slipped under the door of his apartment.