runaway
nounUK /ˈrʌnəweɪ/
US /ˈrʌnəweɪ/
A runaway is someone who leaves home without permission.
The police found the runaway hiding in an old barn.
OTHER MEANINGS
2. Something that is out of control.
The runaway train sped down the hill.
3. A quick and easy victory.
The final match was a runaway for our team.
4. Happening very fast or growing quickly.
The new song became a runaway hit.