The phrase "be enough for" can be replaced with a variety of synonyms depending on the context. Some synonyms that can be used include suffice, satisfy, meet the needs of, fulfill, accommodate, and be sufficient. For example, if you are looking for a phrase to replace "be enough for" when referring to a meal, you can use "satisfy" instead. Similarly, if you want to replace "be enough for" when talking about a job, you can use "fulfill" or "meet the needs of." Ultimately, the synonym used depends on the specific situation and the desired level of formality in the language used.