When it comes to expressing an upper limit or maximum amount, the phrase "no more than" is commonly used. However, there are several synonyms that can be used in its place. Some options include "at most," "maximum," "ceiling," "top," "peak," "highest," and "limit." These synonyms can add variety and emphasis to your writing, especially when used in conjunction with numerical values. For example, instead of saying "I can eat no more than two slices of pizza," you could say "My pizza consumption is limited to a maximum of two slices." Using these synonyms can help you to convey your message more effectively and keep your writing fresh.