gloat 
/ˈgloʊt/ verb
gloats; gloat·ed; gloat·ing /ˈgloʊt/ verb [no obj] : to show in an improper or selfish way that you are happy with your own success or another person's failure
▪ After such a tough campaign, they're gloating over their victory in the election. ▪ All right, you won. There's no need to gloat (about it). ▪ a gloating remark/look
▪ After such a tough campaign, they're gloating over their victory in the election. ▪ All right, you won. There's no need to gloat (about it). ▪ a gloating remark/look
— gloat·ing·ly adverb
▪ They spoke gloatingly about their victory.
▪ They spoke gloatingly about their victory.
