Eyas is a term that is typically used to refer to a young, unfledged bird of prey like a falcon or hawk. However, there are several synonyms that can be used interchangeably with this word. Some common synonyms for eyas include eyass, nestling, eaglet, and chick. All of these words are used to describe young birds that are still dependent on their parents for protection, food, and other necessities. While they may differ slightly in their connotations or usual contexts of use, these synonyms can help to expand your vocabulary and make your writing or speech more precise and varied.