Englishfor English speakers
tumble
Verb
—
When you tumble, you fall down over and over again.
Tie your shoes so that you won't tumble down the stairs.
in
Preposition
—
Used to show that something is inside something else.
The cat is in the box.
—
Used to show that someone is at home, or is available.
Is John in?
The Doctor is now in.
—
Used to show movement towards the inside.
The rain came in through the window.