Step 1: Understanding the Concept:
"Conform" means to comply with rules, standards, or behave in accordance with others.
Step 2: Detailed Explanation:
"Disappoint" means to fail expectations. "Reform" means to change for the better. "Deform" means to misshape. "Dissent" means to disagree or hold contrary opinions — the direct opposite of conforming.
Step 3: Final Answer:
Thus, "Dissent" is the correct antonym.