stumble

To miss one’s step in walking or running; trip and almost fall.

To proceed unsteadily or falteringly; flounder. synonym: blunder.

To act or speak falteringly or clumsily.

To make a mistake or mistakes; blunder.

To come upon accidentally or unexpectedly.

To cause to stumble.

The act of stumbling.

A mistake or blunder.

To slip or trip in moving on the feet; make a false step; strike the foot, or miss footing, so as to stagger or fall.