Causable is an adjective that refers to something that is capable of causing or producing a specific effect. Some synonyms for causable include contributory, effective, responsible, and accountable. Contributory suggests something that plays a smaller role in causing an effect, while effective refers to something that is proven to cause a certain outcome. Responsible and accountable both suggest that something or someone can be held responsible for a particular outcome or event. Other synonyms for causable could include influential, operative, or provoking, depending on the context in which the word is used.