Leopardbane is a term used to describe any plant or herb that is commonly used to ward off leopards or protect oneself from their attacks. There are several synonyms for this word, including leopard's bane, wolfbane, and pantherbane. These terms all refer to the same type of plant that is believed to have an unpleasant odor to big cats, deterring them from coming too close. Other synonyms for leopardbane include rue, wormwood, and tansy, all of which are known for their repelling properties against various pests and insects. These plants have been used for centuries by hunters and farmers who live in areas where big cats are a constant threat.