When discussing the idea of being sufficient for a task or situation, there are a multitude of synonyms to choose from. Some common alternatives that could be used instead of "be sufficient for" would include "meet the needs of," "be adequate for," or "be satisfactory for." Additionally, one could say that a particular solution "fits the bill" or "does the trick." Other options might include "serve the purpose," "fulfill the requirements," or "accommodate the demands of." Ultimately, the specific synonym used may depend on the context or nuance of the situation, but there are plenty of alternatives available to express the idea of being sufficient or satisfactory.