Definition of: stumble

(stum′bəl) v. ·bled, ·bling v.i.
1. To miss one's step in walking or running; trip.
2. To walk or proceed unsteadily or in a blundering manner.
3. To happen upon something by chance: with across, on, upon, etc.
4. To fall into sin or error.
—v.t.
5. To cause to stumble.
—noun The act of stumbling; hence, a blunder; false step. [Cf. Norw. stumla stumble in the dark]
—stum′bler noun
—stum′bling adjective
—stum′bling·ly adverb