Over- (too much, above)
Over-
Too much; or above, across.
Kabir overslept and missed the school bus.
Overcook
To cook food for too long.
Don't overcook the vegetables or they'll go soft.
Overflow
To spill over the top.
The bucket overflowed while Meera was on the phone.
Remember: Over- often means 'too much': overeat, overspend, overload. Its opposite partner is often under-: overcooked ↔ undercooked.