The word "accusable" means that someone is capable of being charged with an offense or wrongdoing. Antonyms for "accusable" would therefore be words that indicate innocence or lack of guilt. Some possible antonyms for "accusable" might be "innocent," "blameless," "exonerated," "cleared," "faultless," or "guiltless." These words imply that the person in question has done nothing wrong and cannot be held responsible for any misdeeds. By contrast, "accusable" implies that the person is potentially guilty of something and can be accused of wrongdoing. Overall, choosing the appropriate antonym for "accusable" depends on the context and intended meaning of the sentence.