Simple past tense and past participle of bumble.(verb)
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Use "bumbled" in a sentence
"And I thought it was one area where Judge Alito was not especially well prepared and he kind of bumbled around a little bit and didn't really seem to have a-- have a very good answer on that."
""We kind of bumbled around our last game in the swamp," said"
"I narrowed my eyes and listened to her bumbled answer."