infidelity

名词

1. 1

   外遇、不忠、出轨

   Their marriage fell apart after years of infidelity and lies.

   他们的婚姻在多年的外遇与谎言后破裂了。

2. 2

   背信、不忠诚正式

   He was accused of infidelity to the principles he once defended.

   他被指责背弃了自己曾经捍卫的原则。