I-adjective (keiyoushi)
manly; brave; heroic
ボクが憧れたのは翔太部長の『力』じゃない。体を張ってでも信念を貫こうとする雄々しい勇気だったはず。What I looked up to in Shota was not his 'strength'. It was his heroic courage to put his life on the line to carry out his convictions.
Also written 男々しい【おおしい】