Word 得体  Détǐ Literally Means Good Proper Sounds

得体 

détǐ

Literally means “good and proper,” but because it sounds like the English word “dirty,” which has the opposite meaning, the word has been punned on and joked about to the extent that it has now taken on the alternate meaning of “someone who seems good on the outside but is actually bad on the inside.” This new usage has been popularized by the song “Dirty” by Taiwanese-American singer Lee-Hom Wang.