2 sentences for 败坏 (bài​huài — ruin)

1. 他的丑闻败坏了整个家族的名声。

   tā de chǒu​wén bài​huài le zhěng gè jiā​zú de míng​shēng.

   His scandal tarnished the entire family's reputation.

   Source: Dong Chinese Dictionary

2. 这种败坏门风的行为简直是辱没家门。

   zhè zhǒng bài​huài mén​fēng de xíng​wéi jiǎn​zhí shì rǔ​mò jiā​mén.

   This kind of scandalous behavior is a disgrace to the family.

   Source: Dong Chinese Dictionary