Gentilic refers to the adjective or noun describing a person from a specific place or region. If you are looking for synonyms for gentilic, one can consider terms such as demonym, ethnic, national, indigenous, local and regional. These words can be used interchangeably with gentilic while describing people and places. For example, if you need to describe someone from Berlin, you may use German as a gentilic, but you can also use Berliner as a demonym. Similarly, if you need to describe someone from Japan, you may use Japanese as a gentilic, but you can also use Nipponese as a synonym.