Coldwaters is a term that is often used to describe a body of water that is at a low temperature. However, there are several other synonyms that can be used in its place, depending on the context and intended meaning. Some examples of synonyms for coldwaters include chilly, frigid, frosty, icy, and wintry. Each of these words contains a slightly different nuance, with chilly suggesting a mild coldness, and frigid indicating a more severe level of cold. Frosty and wintry both evoke a wintertime atmosphere, while icy suggests a surface frozenness. All of these words can be used interchangeably with coldwaters and can add depth to a piece of writing by providing a more specific descriptor.