slow , ****
slow down **
slow up

"We have to slow up that process a little bit and get a return on our investment."

If you slow up and hit it, you're not going to get those calls at all.

This tale seemed to slow her up, but not for long.

We'll slow things up here, and hold on till they get back.

He did not slow up or let go of me.

I tried a few more tricks, just to slow things up.

They were just ready when the train slowed up again and it was time to get out.

Do you think that low wall is going to slow them up?

If anything at all went wrong and slowed them up, there'd be hell to pay.

That's why the sound of her voice was slowed up.