n.不忠實
His disloyalty stabbed me to the heart. 他對我不忠使我傷透了心。
He was/felt deeply wounded by their disloyalty. 因為他們不忠,他十分傷心。
I know he suspect me of disloyalty, but I suppose I'll just have to brave it out. 我知道他懷疑我不忠,但是我想我不得不硬著頭皮去見他。