—v.i. 1. to strike the foot against something, as in walking or running, so as to stagger or fall; trip.
2. to walk or go unsteadily: to stumble down a dark passage. 3. to make a slip, mistake, or blunder, esp. a sinful one: to stumble over a question; to stumble and fall from grace. 4. to proceed in a hesitating or blundering manner, as in action or speech (often fol. by along).
5. to discover or meet with accidentally or unexpectedly (usually fol. by on, upon, or across): They stumbled on a little village. 6. to falter or hesitate, as at an obstacle to progress or belief.
—v.t. 1. to cause to stumble; trip.
2. to give pause to; puzzle or perplex.
—n. 1. the act of stumbling.
2. a moral lapse or error.
3. a slip or blunder.