felicitations       
noun [ plural ]  old-fashioned or humorous uk/fəˌlɪs.ɪˈteɪ.ʃənz/ us/fəˌlɪs.əˈteɪ.ʃənz/
 祝贺;祝福
an expression used to wish someone happiness, or to praise or show approval
  May I offer my felicitations on your engagement. 我为你们的订婚祝福。