

The heavy rain could ruin our picnic.
To cause something to be destroyed or to fail completely.
The fire could ruin the entire building.
A bad decision might ruin his career.
Her mistake could ruin their friendship.
ruin someone's plans
ruin a relationship
ruin a meal
destroy
wreck
spoil
The old building fell into ruin after the storm.
The state of being destroyed or damaged beyond repair.
The castle was left in ruin after years of neglect.
The car was in ruin after the accident.
Her dreams fell into ruin when she lost her job.
fall into ruin
bring to ruin
left in ruin
destruction
devastation
wreckage