run away

US /rʌn əˈweɪ/
UK /rʌn əˈweɪ/
"run away" picture
1.

to escape from a place or situation, often secretly or suddenly

:
The child tried to run away from home.
He decided to run away from his problems instead of facing them.
2.

to lose control and become wild or unmanageable

:
The horse ran away with its rider.
The costs of the project started to run away.