When "compromise" means a negotiated settlement:
* Insistence: Refusing to budge from one's position.
* Stubbornness: Unwillingness to compromise or change one's mind.
* Obstinacy: Firmly adhering to one's own opinion despite evidence or persuasion.
* Rigidity: Unwillingness to be flexible or adapt.
* Confrontation: A direct and forceful approach that avoids negotiation.
* Standoff: A situation where neither side will give in.
When "compromise" means a lowering of standards or principles:
* Integrity: Adhering to moral and ethical principles.
* Purity: Being free from impurities or imperfections.
* Perfection: The state of being flawless or without fault.
* Unyielding: Refusing to give in to pressure or compromise.
Other possible opposites:
* Total agreement: Complete agreement on all points.
* Victory: Achieving a complete and decisive win.
The best opposite will depend on the specific situation and the intended meaning of the word "compromise."