virile; tough; masculine; sharp (features, look, etc.); fierce; dauntless
精悍な顔つきの男が入口に立っていた。
A fierce-looking man stood at the entrance.
精悍な体つきからは鍛錬の跡が窺えた。
His tough build showed signs of training.
小柄だが精悍な雰囲気を持つ武道家だ。
He is a martial artist who is small but has a fierce aura.