To trip in walking or moving in any way upon the legs; to strike the foot so as to fall, or to endanger a fall; applied to any animal. A man may stumble, as well as a horse. The way of the wicked is as darkness; they know not at what they stumble. Proverbs 4:19.

To err; to slide into a crime or an error. He that loveth his brother, abideth in the light, and there is none occasion of stumbling in him. 7 John 2:10.

To strike upon without design; to fall on; to light on by chance. Men often stumble upon valuable discoveries. Ovid stumbled by some inadvertence upon Livia in a bath.

To obstruct in progress; to cause to trip or stop.

To confound; to puzzle; to put to a nonplus; to perplex. One thing more stumbles me in the very foundation of this hypothesis.

A trip in walking or running.

A blunder; a failure. One stumble is enough to deface the character of an honorable life.