Bravissimo is an Italian word used to express high praise and congratulations, and is often used in the context of music or performance. There are a number of synonyms that can be used to convey a similar sentiment, including "excellent," "outstanding," "superb," "magnificent," "terrific," and "phenomenal." Other words that express admiration and praise include "remarkable," "exceptional," "wonderful," "fantastic," "impressive," and "splendid." Although different words may be more appropriate in varying contexts, each of these synonyms expresses the sentiment of great admiration and applause for a performance or achievement.