Confutative is an adjective that means contradictory or able to refute an argument. Some synonyms of the word confutative are refutable, disputable, rebuttable and negatable. Refutable refers to an argument that can be disproved with evidence or logic. Disputable means that something is open to argument or debate. Rebuttable refers to an argument that can be countered or refuted. Negatable means that something can be denied or disproven. All these synonyms share a common idea of being able to challenge an argument or belief. Using these synonyms can add variety and precision to a piece of writing.