elated       
adjective uk/iˈleɪ.tɪd/ us/iˈleɪ.t̬ɪd/
C2 兴高采烈的;喜气洋洋的;欢欣鼓舞的
extremely happy and excited, often because something has happened or been achieved
  The prince was reported to be elated at/by the birth of his daughter. 据报道,王子喜得千金。 
 Synonym: ecstatic
Opposites: dejectedsorrowful