The merchant was just starting toward the tunnel when his feet stumbled over something soft beside the table.

But his feet stumbled, he felt as if he could not walk.

His foot stumbled on the unfolded mat, and he stopped.

When I started to load that big flask on the truck, it was like my feet stumbled over each other.

He still felt dazed, his body shook, feet stumbled over themselves.

His feet almost stumbled on the steps, but managed to reach the lobby.

Her feet stumbled onto cold concrete, and she grabbed at his coat to steady herself.

Why did her feet stumble so on the rug?

Their feet stumbled on the cobbles, and she gripped his arm.

Had my foot stumbled, it would have been the end.