History
History
History
UK
US
Meaning:

to hit the foot against something and (almost) fall; to speak with pauses and mistakes

slip, stagger

bumble careen fall fall down falter flounder hesitate limp lumber lurch shuffle swing waver wobble blunder err muddle pitch reel stammer tilt topple totter trip wallow lose balance
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STUMBLE as in Wiktionary
STUMBLE as in Wikipedia