v. bum·bled, bum·bling, bum·bles v.intr. 1. To speak in a faltering manner. 2. To move, act, or proceed clumsily. See Synonyms at blunder. 3. To make a buzzing sound. v.tr. 1. To say (something) in a faltering manner. 2. To bungle; botch: bumble one's lines in a play. bumbler n. |
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