▪ I.† ˈserenate,v.Obs.rare—1. [f. serene a. + -ate3; cf.It.serenare.] trans. To render serene. 1654R. Flecknoe Ten Years Trav. 169 Then for serenating the mind,..Where in lowd cities shall you find A recollection like to this? ▪ II.serenate obs. form of serenade n.