| 复发 | fu4 fa1 | to reappear |
| 故态复萌 | gu4 tai4 fu4 meng2 gu4 tai4 xia4 meng2 | to revert to old ways |
| 复吸 | fu4 xi1 | to resume smoking (after giving up) |
| 旧病复发 | jiu4 bing4 fu4 fa1 | a relapse |
| 再度堕落 | zai4 du4 duo4 luo4 | relapse |
| 再陷邪道 | zai4 xian4 xie2 dao4 | relapse |
| 神经梅毒复发 | shen2 jing1 mei2 du2 xia4 fa1 | neurorelapse |
| 血清效价回升 | xie3 qing1 xiao4 jia4 hui2 sheng1 | serorelapse |