crumbled
verb (past tense)UK /ˈkrʌm.bəld/
US /ˈkrʌm.bəld/
Broke into small pieces.
She crumbled the cookie into her milk.
OTHER MEANINGS
2. Fell apart or collapsed into pieces.
The old stone wall crumbled after the storm.
3. Failed or came to an end.
Their plans crumbled when the rain started.
4. Became weak or broke down emotionally.
He crumbled under the pressure of the exam.