crowingly

Etymology
From.

Adverb

 * 1) So as to crow; with jubilation or schadenfreude.
 * 2) * 1902, Watson Bradshaw, "Thyestes", Act V., in The Ten Tragedies of Seneca, page 135.
 * Wicked Atreus crowingly congratulates himself on his cruel revenge

Synonyms

 * exultantly, exultatingly, exultingly, jubilantly