| 1 | 残酷 | 殘酷 | cán kù | can2 ku4 | cruel; cruelty | | |
| 2 | 炙酷 | 炙酷 | zhì kù | zhi4 ku4 | torrid weather | | |
| 3 | 扮酷 | 扮酷 | bàn kù | ban4 ku4 | to act cool | | |
| 4 | 严寒酷暑 | 嚴寒酷暑 | yán hán kù shǔ | yan2 han2 ku4 shu3 | bitter cold or torrid heat (idiom) | | |
| 5 | 炫酷 | 炫酷 | xuàn kù | xuan4 ku4 | Cool | | |
| 6 | 跑酷 | 跑酷 | pǎo kù | pao3 ku4 | parkour (loanword) | | |
| 7 | 冷酷无情 | 冷酷無情 | lěng kù wú qíng | leng3 ku4 wu2 qing2 | cold-hearted; unfeeling; callous | | |
| 8 | 冷酷 | 冷酷 | lěng kù | leng3 ku4 | grim; unfeeling; callous | | |
| 9 | 酷炫 | 酷炫 | kù xuàn | ku4 xuan4 | (slang) cool; awesome | | |
| 10 | 酷刑折磨 | 酷刑折磨 | kù xíng zhé mó | ku4 xing2 zhe2 mo2 | torture and cruel treatment | | |
| 11 | 酷刑 | 酷刑 | kù xíng | ku4 xing2 | cruelty; torture | | |
| 12 | 酷肖 | 酷肖 | kù xiào | ku4 xiao4 | to strikingly resemble | | |
| 13 | 酷似 | 酷似 | kù sì | ku4 si4 | to strikingly resemble | | |
| 14 | 酷斯拉 | 酷斯拉 | kù sī lā | Ku4 si1 la1 | Godzilla (Japanese ゴジラ Gojira); see also 哥斯拉 | | |
| 15 | 酷暑 | 酷暑 | kù shǔ | ku4 shu3 | intense heat; extremely hot weather | | |
| 16 | 酷热 | 酷熱 | kù rè | ku4 re4 | torrid heat | | |
| 17 | 酷鹏 | 酷鵬 | kù péng | ku4 peng2 | coupon (loanword) | | |
| 18 | 酷派 | 酷派 | kù pài | Ku4 pai4 | Coolpad Group Ltd, Chinese company | | |
| 19 | 酷烈 | 酷烈 | kù liè | ku4 lie4 | intense; brutal; fierce | | |
| 20 | 酷儿 | 酷兒 | kù ér | ku4 er2 | queer (sexuality) | | |
| 21 | 酷毙 | 酷斃 | kù bì | ku4 bi4 | (slang) awesome; cool; righteous | | |
| 22 | 酷爱 | 酷愛 | kù ài | ku4 ai4 | to be keen on; to have a passion for | | |
| 23 | 酷 | 酷 | kù | ku4 | ruthless; strong (e.g. of wine); (loanword) cool; hip | | |
| 24 | 反酷刑折磨公约 | 反酷刑折磨公約 | fǎn kù xíng zhé mó gōng yuē | fan3 ku4 xing2 zhe2 mo2 gong1 yue1 | UN convention against torture and cruel treatment (ratified by PRC in 1988) | | |
| 25 | 残酷无情 | 殘酷無情 | cán kù wú qíng | can2 ku4 wu2 qing2 | cruel and unfeeling (idiom) | | |