Word parts debate + -able Pronunciation (UK) IPA (key): [dɪˈbeɪtəbəɫ] Adjective Positive debatable Comparative more debatable Superlative most debatable If something is debatable, it is open for debate as it is not fully proven or confirmed. Those data are debatable: no one has been able to replicate them. It's debatable whether he is the best candidate for the position.Wikiwand - on Seamless Wikipedia browsing. On steroids.Remove ads