or else

Từ điển Oxford Advanced Learner 8th

or else idiom
1. if not
Syn: ↑otherwise
• Hurry up or else you'll be late.
• They can't be coming or else they'd have called.
2. used to introduce the second of two possibilities
• He either forgot or else decided not to come.
3. (informal)used to threaten or warn sb
• Just shut up, or else!
Main entry: ↑else_idiom