The word "clasa" is a Romanian word that means "class" in English. Synonyms for "clasa" would include "grupă" or "clasă de elevi" which both refer to a group of students in a particular grade level. The word "an" can also be added to the end of "clasa" to indicate what academic year the class is in, such as "clasa a 12-a" meaning "12th grade class". Other synonyms for "clasa" could be "cohort", "grade" or "year group" depending on the context in which it's being used. These synonyms can help add variety and precision to one's language.