stumble
US /ˈstʌm.bəl/
UK /ˈstʌm.bəl/

1.
tropezar, tambalearse
trip or momentarily lose one's balance; almost fall
:
•
He began to stumble as he walked through the uneven terrain.
Empezó a tropezar mientras caminaba por el terreno irregular.
•
She stumbled on a loose rock and nearly fell.
Ella tropezó con una roca suelta y casi se cae.
2.
tropezar, tartamudear
make a mistake or repeated mistakes in speaking or understanding
:
•
He tends to stumble over his words when he's nervous.
Tiende a tropezar con sus palabras cuando está nervioso.
•
The speaker would often stumble during his long speech.
El orador a menudo tropezaba durante su largo discurso.
3.
tropezar con, encontrar por casualidad
find or discover (something) by chance
:
•
They stumbled upon an old, abandoned cabin in the woods.
Se tropezaron con una cabaña vieja y abandonada en el bosque.
•
I stumbled across an interesting article online.
Me tropecé con un artículo interesante en línea.