fall behind

Both of the Terrans feared to fall behind, to lose touch with that guide.

But he strode on, at a pace which made her run lest she should fall behind.

The other tried to do the same, but she seemed to droop and fall behind.

But even with this new source of income they began to fall behind.

But it was not easy for the cub lion, and soon he began to limp and fall behind.

Some of us fall behind the fashions, but no one ever gets ahead of them.

As if the beauty and sacredness of the demonstrable must fall behind that of the mythical!

Turn your face to the light, and the shadow will fall behind you.

They soon tired, and had to slow their pace and fall behind.

But the husband took her arm, and I was obliged to fall behind.