The word "in-dent" is used to describe a notch or groove that is made on a surface. Some possible antonyms for "in-dent" might include words like "bulge," "protrude," or "jut out," which suggest a raised or elevated surface. Other antonyms might include words like "smooth," "flat," or "level," which suggest a surface that is even and lacking in any kind of noticeable indentation or groove. Ultimately, the antonyms for "in-dent" will depend on the context in which the word is being used, as well as the specific meaning that is intended.