"Windies" is a colloquial term used to refer to the West Indies, a region in the Caribbean comprised of several islands. When it comes to synonyms for this term, various options exist depending on the context in which it is used. For example, the West Indies can be referred to as the Caribbean or the Caribbean Islands. It is also acceptable to use the term West Indian, which refers to people from the region, or Caribbean Islander. Additionally, specific islands within the West Indies can be used as alternatives such as Barbados, Jamaica, and Trinidad and Tobago. Ultimately, the choice of synonym will depend on the setting and intended audience.