Nucleofuge is a term used in organic chemistry to describe a molecule or group that splits away from a reactive center during a reaction. Some synonyms for nucleofuge include leaving group, departing group, and dissociating group. These terms essentially describe the same concept as nucleofuge, but each may be more appropriate depending on the context. Another synonym for nucleofuge that is commonly used is "good leaving group." Additionally, the term "substituent" can also be used to describe a nucleofuge as it refers to any atom or group of atoms that can be substituted for the reactive center. Overall, there are several synonyms for nucleofuge that can be used interchangeably and can help to clarify the concept in organic chemistry reactions.