source: Imgur: The magic of the Internet

having won a victory; triumphant:

«競技･戦争などで/…に対して» 勝利を得た, 勝った; 勝ち誇った «in/over»

e.g. a victorious army

e.g. the team defied the odds and emerged victorious.

of or characterized by victory:

〖名詞の前で〗勝利の, 勝利を示す

e.g. he'd participated in the victorious campaigns of the Franco-Prussian War.

victoriously |vikˈtôrēəslē| adverb

victoriousness noun

late Middle English: from Anglo-Norman French victorious, from Latin victoriosus, from victoria (see victory).