round off

(verb) make round. Synonyms: round, round out, round off. Example: "Round the edges."

(verb) bring to a highly developed, finished, or refined state. Synonyms: polish, round, round off, polish up, brush up. Example: "Polish your social manners."

(verb) express as a round number. Synonyms: round off, round down, round out, round. Example: "Round off the amount."