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." "The way of the wicked is as darkness: they know at what they stumble."
2.To walk in an unsteady or clumsy manner. "He stumbled up the dark avenue."
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."
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." "Forth as she waddled in the brake, A gray goose stumbled on a snake."
...
