1 blunder about, come a cropper (informal) fall, falter, flounder, hesitate, lose one's balance, lurch, reel, slip, stagger, trip
on or upon blunder upon, chance upon, come across, discover, encounter, find, happen upon, light upon, run across, turn up
3 falter, fluff (informal) stammer, stutter
English Collins Dictionary - English synonyms & Thesaurus
stumble ( stumbles plural & 3rd person present) ( stumbling present participle) ( stumbled past tense & past participle )
1 verb If you stumble, you put your foot down awkwardly while you are walking or running and nearly fall over.
He stumbled and almost fell... V
I stumbled into the telephone box and dialed 999. V prep/adv
Stumble is also a noun., n-count usu sing
I make it into the darkness with only one stumble.
2 verb If you stumble while you are reading aloud or speaking, you make a mistake, and have to pause before saying the words properly.
...his voice wavered and he stumbled over the words at one point. V over n, Also V stumble across , stumble on phrasal verb If you stumble across something or stumble on it, you find it or discover it unexpectedly.
I stumbled across an extremely simple but very exact method for understanding where my money went... V P n
History relates that they stumbled on a magnificent waterfall. V P n
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