FDY is a type of yarn that is typically made of polyester material. When looking for synonyms for this term, some possible options might include yarns like DTY, POY, or even SPUN PET. These terms all refer to different types of polyester yarns that are commonly used in a variety of textile applications. While each term may have slightly different properties or characteristics, they are all similar to FDY in that they are made of polyester and are used to create high-quality, durable fabrics and materials. Whether you are a textile manufacturer or simply someone who loves to craft with yarn, these synonyms can help broaden your vocabulary and understanding of the world of textiles.