stumble verb

ADV. almost, nearly | a little, slightly She stumbled a little on the uneven path. | blindly He stumbled blindly on through the dark building. | about, along, around, away, back, backwards, forward, on, out

PREP. against, along, down, from, into, out of, over, towards, etc. They stumbled over the ploughed field.

PHRASES stumble to your feet The train stopped, and several passengers stumbled to their feet. PHRASAL VERBS stumble across/on/upon sth

ADV. accidentally, by chance, unwittingly I stumbled across the place quite by chance.