When it comes to expressing a restriction or boundary on something, there is a wide range of synonyms for the phrase "limit to." Some possible options include "cap," "ceiling," "cut-off point," "maximum," "boundary," "restriction," and "cap on." Other similar phrases might include "contain," "constrain," "curtail," "restrict," "restrain," and "hold back." Each of these words or phrases can be used to communicate a limit or barrier in a particular situation, whether it be in terms of quantity, time, budget, or some other factor. By exploring a variety of synonyms, you can find the perfect phrasing to convey your intended meaning.