slip in
stick in *
sneak in
insert **

No one saw her when she slipped in the front door.

How had his life slipped so much in those few years?

Well, maybe I slip in a little more information than she wanted.

The person having it is really there, as if he'd slipped his place in time.

That figure slipped to 10.3 percent in March, still a high level.

He slipped a key in the door and opened it.

They slipped back to bottom position out of 16 in the third season, 1898-99.

He could feel his feet slipping in the river bottom.

Book sales are reported to have slipped 20% in 12 months.

He had slipped in a pool of his own blood.