the quality of being unfriendly, unhappy, and very serious, especially in appearance or manner

Her dourness is broken by an impish smile. 她露出顽皮的微笑，不再不苟言笑。

He displays neither dourness nor anger, but instead a generosity of spirit coupled with a nimble, questing mind. 他既没有表现出冷漠也没有显得很愤怒，而是慷慨大方，头脑灵活，乐于探索。