There are several synonyms for the phrase "be as good as" that can be used to express a similar idea. One such word is "equal," which connotes that two things or people are of the same quality or worth. Another is "match," which implies that one thing can compete or compare closely with another. Similarly, "compare" suggests that two things can be evaluated side by side and judged to be equivalent or almost so. Additionally, "measure up to" can be used to indicate that something meets the expectations or standards set for it, while "keep up with" suggests that one thing can keep pace with another in terms of quality or performance.