Webster's Revised Unabridged Dictionary · 1913

Stumble

Stumble , intransitive verb

[Old English stumblen, stomblen; freq. of a word akin to English stammer. See Stammer.]

1.
To trip in walking or in moving in any way with the legs; to strike the foot so as to fall, or to endanger a fall; to stagger because of a false step.
There stumble steeds strong and down go all. — Chaucer
The way of the wicked is as darkness: they know at what they stumble. — Bible (KJV) - Proverb iv. 19
2.
To walk in an unsteady or clumsy manner.
He stumbled up the dark avenue. — Sir W. Scott
3.
To fall into a crime or an error; to err.
He that loveth his brother abideth in the light, and there is none occasion og stumbling in him. — 1 John ii. 10
4.
To strike or happen (upon a person or thing) without design; to fall or light by chance; -- with on, upon, or against.
Ovid stumbled, by some inadvertency, upon Livia in a bath. — Dryden
Forth as she waddled in the brake, A gray goose stumbled on a snake. — C. Smart

Stumble , transitive verb

1.
To cause to stumble or trip.
2.
Figuratively: To mislead; to confound; to perplex; to cause to err or to fall.
False and dazzling fires to stumble men. — Milton
One thing more stumbles me in the very foundation of this hypothesis. — Locke

Stumble , noun

1.
A trip in walking or running.
2.
A blunder; a failure; a fall from rectitude.
One stumble is enough to deface the character of an honorable life. — L'Estrange