adj. Of or pertaining to superstition; proceeding from, or manifesting, superstition; as, superstitious rites; superstitious observances. Evincing superstition; over scrupulous and rigid in religious observances; addicted to superstition; full of idle fancies and scruples in regard to religion. Over exact; scrupulous beyond need. Superstitious use (Law), the use of a gift or bequest, as of land, etc., for the maintenance of the rites of a religion not tolerated by the law.