There are several synonyms for the phrase "was sufficient." Some of these include "was adequate," "was enough," "was ample," "was satisfactory," and "was suitable." All of these phrases indicate that something was deemed to be sufficient or satisfactory for a particular purpose. For example, if someone says that a certain amount of money was sufficient to cover their expenses, they mean that the amount was enough to meet their needs. Similarly, if someone says that their level of preparation for an exam was adequate, they mean that they had prepared enough to perform well on the exam. Overall, these synonyms help convey the idea of having enough or meeting expectations.