Must be a change in the weather because his old legs never failed to give warning.

He drew up short at the rest of the picture the legs failed to present.

The man stumbled and stood, but his legs failed him in a step forward.

It was simply that his left leg had failed him.

They must be worried that their legs would fail beneath them just when someone else was coming about.

The first time, his legs failed to support him and he fell back.

That was when Vetch's legs failed him, and he sat down hard on the ground.

Then your legs fail and you cannot take in new experiences.

He stood up and his legs nearly failed him.

At first, her legs failed her, as they often do.