Synonyms for Disputation (same or very similar meaning)
WordNet sense 1 (the formal presentation of and opposition to a stated proposition (usually followed by a vote)):
debate, public debateWordNet sense 2 (a contentious speech act; a dispute where there is strong disagreement):
argument, contention, controversy, tilt, arguing, contestation, disceptationFrom the ODE community, based on WordNetadd/edit