disproportion
- n lack of proportion; imbalance among the parts of something
disprover
- n a debater who refutes or disproves by offering contrary evidence or argument
disputant
- n a person who disputes; who is good at or enjoys controversy
disputation
- n the formal presentation of a stated proposition and the opposition to it (usually followed by a vote)
- n a contentious speech act; a dispute where there is strong disagreement