The phrase "haddest do with" can be a bit archaic and out-of-use in modern times, so finding antonyms may be a bit of challenge. However, depending on the context in which it is being used, antonyms could include "have nothing to do with," "not involved," "unrelated," "not connected," "inconsequential," or "irrelevant." These words suggest a lack of association or connection, indicating that the subject is not pertinent to the matter at hand. Other related antonyms could be "disconnected," "unrelated," or "unassociated." Ultimately, the specific antonym will depend on the intended meaning of the phrase and the context in which it is used.