from The American Heritage® Dictionary of the English Language, 4th Edition
- intransitive v. To miss one's step in walking or running; trip and almost fall.
- intransitive v. To proceed unsteadily or falteringly; flounder. See Synonyms at blunder.
- intransitive v. To act or speak falteringly or clumsily.
- intransitive v. To make a mistake; blunder.
- intransitive v. To fall into evil ways; err.
- intransitive v. To come upon accidentally or unexpectedly: "The urge to wider voyages . . . caused men to stumble upon New America” ( Kenneth Cragg).
- transitive v. To cause to stumble.
- n. The act of stumbling.
- n. A mistake or blunder.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. a fall, trip or substantial misstep
- n. an error or blunder
- v. to trip or fall
- v. to make a mistake or have trouble
from the GNU version of the Collaborative International Dictionary of English
- intransitive v. 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.
- intransitive v. To walk in an unsteady or clumsy manner.
- intransitive v. To fall into a crime or an error; to err.
- intransitive v. To strike or happen (upon a person or thing) without design; to fall or light by chance; -- with on, upon, or against.
- transitive v. To cause to stumble or trip.
- transitive v. Fig.: To mislead; to confound; to perplex; to cause to err or to fall.
- n. A trip in walking or running.
- n. A blunder; a failure; a fall from rectitude.
from The Century Dictionary and Cyclopedia
- 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.
- To move or act unsteadily or in a staggering manner; trip in doing or saying anything; make false steps or blunders, as from confusion or inattention: as, to stumble through a performance.
- To take a false step or be staggered mentally or morally; trip, as against a stumbling-block; find an occasion of offense; be offended or tempted.
- To come accidentally or unexpectedly; chance; happen; light: with on or upon.
- To cause to stumble; cause to trip; stagger; trip up.
- To puzzle; perplex; embarrass; nonplus; confound.
- n. The act of stumbling; a trip in walking or running.
- n. A blunder; a failure; a false step.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- v. miss a step and fall or nearly fall
- n. an unintentional but embarrassing blunder
- v. walk unsteadily
- v. encounter by chance
- v. make an error
- n. an unsteady uneven gait
Middle English stumblen, probably of Scandinavian origin; akin to Old Norse stumra.(American Heritage® Dictionary of the English Language, Fourth Edition)