The phrase "not excessive" refers to something that is moderated or balanced. Some synonyms for this expression include reasonable, proportionate, moderate, adequate, and equitable. Each of these words conveys the idea that something is not beyond the normal limit and is at a suitable level. Reasonable suggests something is sensible and logical. Proportionate implies that something is in proportion to something else. Moderate connotes a moderate amount that isn't too extreme. Adequate has the meaning of being sufficient or satisfactory. Equitable means something that is fair and just. All of these words can be a useful replacement for "not excessive".