infidelity

名詞

1. 1

   外遇、不忠、出軌

   Their marriage fell apart after years of infidelity and lies.

   他們的婚姻在多年的外遇與謊言後破裂了。

2. 2

   背信、不忠誠正式

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

   他被指責背棄了自己曾經捍衛的原則。