Her face was filled with exultation when she heard the news of her acceptance to the top university.

exultation 是名词，来自动词 exult（狂喜、欢欣鼓舞），由前缀 ex-（表示"向外"）和拉丁词根 -sult（跳跃）组成，字面意思是"高兴得跳起来"，指"极度喜悦、狂喜"的状态。