Sift is a word used to describe the action of separating impurities and larger particles from a finer substance by passing it through a sieve or filter. Some common synonyms for sift include strain, filter, screen, and separate. Other synonyms include refine, purify, winnow, and sieve. These words describe the process of removing unwanted elements from a substance to create a more pure or refined end product. Each word also carries slightly different connotations, depending on the context in which it is used. By using these synonyms effectively, writers can add variety and depth to their language and clearly communicate their intended meaning to their readers.