| 1 | 衰变 | 衰變 | shuāi biàn | shuai1 bian4 | radioactive decay | | |
| 2 | 衰老 | 衰老 | shuāi lǎo | shuai1 lao3 | to age; to deteriorate with age; old and weak | | |
| 3 | 衰落 | 衰落 | shuāi luò | shuai1 luo4 | to fall; to drop; to decline; to deteriorate; to go downhill | | |
| 4 | 衰退 | 衰退 | shuāi tuì | shuai1 tui4 | to decline; to fall; to drop; to falter; a decline; recession (in economics) | | |
| 5 | 衰弱 | 衰弱 | shuāi ruò | shuai1 ruo4 | weak; feeble | | |
| 6 | 衰 | 衰 | shuāi | shuai1 | to decline; to wane; to become weak or feeble | | |
| 7 | 心力衰竭 | 心力衰竭 | xīn lì shuāi jié | xin1 li4 shuai1 jie2 | heart failure | | |
| 8 | 唱衰 | 唱衰 | chàng shuāi | chang4 shuai1 | to express pessimistic views about (sth) | | |
| 9 | 人生盛衰 | 人生盛衰 | rén shēng shèng shuāi | ren2 sheng1 sheng4 shuai1 | life has its ups and downs (idiom) | | |
| 10 | 衰变链 | 衰變鏈 | shuāi biàn liàn | shuai1 bian4 lian4 | decay chain | | |
| 11 | 衰败 | 衰敗 | shuāi bài | shuai1 bai4 | to decline; to wane; to decay; to deteriorate | | |
| 12 | 盛衰荣辱 | 盛衰榮辱 | shèng shuāi róng rǔ | sheng4 shuai1 rong2 ru3 | prosperity and decline; vicissitudes of life (idiom) | | |
| 13 | 盛衰 | 盛衰 | shèng shuāi | sheng4 shuai1 | to flourish then decline; rise and fall | | |
| 14 | 盛极而衰 | 盛極而衰 | shèng jí ér shuāi | sheng4 ji2 er2 shuai1 | to pass its zenith and be on the wane (idiom) | | |
| 15 | 神经衰弱 | 神經衰弱 | shén jīng shuāi ruò | shen2 jing1 shuai1 ruo4 | (euphemism) mental illness; psychasthenia | | |
| 16 | 荣枯盛衰 | 榮枯盛衰 | róng kū shèng shuāi | rong2 ku1 sheng4 shuai1 | swing of the pendulum (idiom) | | |
| 17 | 年老血衰 | 年老血衰 | nián lǎo xuè shuāi | nian2 lao3 xue4 shuai1 | old and decrepit (idiom) | | |
| 18 | 年老体衰 | 年老體衰 | nián lǎo tǐ shuāi | nian2 lao3 ti3 shuai1 | to be worn with age (idiom) | | |
| 19 | 年老力衰 | 年老力衰 | nián lǎo lì shuāi | nian2 lao3 li4 shuai1 | old and weak (idiom) | | |
| 20 | 精神衰弱 | 精神衰弱 | jīng shén shuāi ruò | jing1 shen2 shuai1 ruo4 | psychasthenia; obsessive-compulsive disorder | | |
| 21 | 经久不衰 | 經久不衰 | jīng jiǔ bù shuāi | jing1 jiu3 bu4 shuai1 | unfailing; never-ending | | |
| 22 | 逐渐衰落 | 逐漸衰落 | zhú jiàn shuāi luò | zhu2 jian4 shuai1 luo4 | to decline gradually | | |
| 23 | 国势日衰 | 國勢日衰 | guó shì rì shuāi | guo2 shi4 ri4 shuai1 | national decline | | |
| 24 | 光纤衰减 | 光纖衰減 | guāng xiān shuāi jiǎn | guang1 xian1 shuai1 jian3 | optical attenuation | | |
| 25 | 放射性衰变 | 放射性衰變 | fàng shè xìng shuāi biàn | fang4 she4 xing4 shuai1 bian4 | radioactive decay | | |