Bat ears is a descriptive term used to refer to someone's ears, which resemble those of a bat. While this term is mostly used humorously, there are plenty of alternative synonyms that can be used in a more appropriate way. Some of the synonyms to bat ears include big ears, jug ears, or dumbo ears. Other options are winged ears, elfin ears, or satellite dishes. These terms are commonly used to describe someone with unusually large or prominently shaped ears. It's important to remember that while using these synonyms, we should be careful not to use terms that may make an individual feel insecure or uncomfortable about their appearance.