Accretes refers to the process of gradual growth or accumulation of something. This word can be replaced with several other synonyms depending on the context in which it is used. Some common synonyms include accumulate, amass, augment, build up, cumulate, gather, increase, and mount up. These words carry similar meanings of gradual growth, accumulation, or addition over time. Accretes can also be replaced with terms such as expand, enlarge, or extend, which signify an increase in size or extent. Overall, synonyms for accretes help to expand our vocabulary and better articulate the process of gradual growth.