gloat

To exhibit a conspicuous (sometimes malevolent) pleasure or sense of self-satisfaction, often at an adversary's misfortune.

You did well to win the game, but there's no need to gloat about it.

To triumph, crow, relish, glory, revel.

An act or instance of gloating.

They spun wildly on their heels, jodelling after the accepted manner of a 'gloat,' which is not unremotely allied to the primitive man's song of triumph […]