| 1 | 私人 | 私人 | sī rén | si1 ren2 | private; personal; interpersonal; sb with whom one has a close personal relationship; a member of one's clique | | |
| 2 | 私有制 | 私有制 | sī yǒu zhì | si1 you3 zhi4 | private ownership of property | | |
| 3 | 私有 | 私有 | sī yǒu | si1 you3 | private; privately-owned | | |
| 4 | 私 | 私 | sī | si1 | personal; private; selfish | | |
| 5 | 私有财产 | 私有財產 | sī yǒu cái chǎn | si1 you3 cai2 chan3 | private good | | |
| 6 | 私营 | 私營 | sī yíng | si1 ying2 | privately-owned; private | | |
| 7 | 私营企业 | 私營企業 | sī yíng qǐ yè | si1 ying2 qi3 ye4 | private business; opposite: state-owned enterprise 国有企业 | | |
| 8 | 私自 | 私自 | sī zì | si1 zi4 | private; personal; secretly; without explicit approval | | |
| 9 | 私人服务器 | 私人服務器 | sī rén fú wù qì | si1 ren2 fu2 wu4 qi4 | (gaming) server emulator; private server | | |
| 10 | 私服 | 私服 | sī fú | si1 fu2 | (gaming) server emulator; private server; abbr. for 私人服务器 | | |
| 11 | 私讯 | 私訊 | sī xùn | si1 xun4 | (Tw) private message; to send a private message | | |
| 12 | 私卖私分 | 私賣私分 | sī mài sī fēn | si1 mai4 si1 fen1 | to sell products illicitly and divide the spoils (idiom) | | |
| 13 | 私卖 | 私賣 | sī mài | si1 mai4 | to sell illicitly; to bootleg; to sell privately | | |
| 14 | 私了 | 私了 | sī liǎo | si1 liao3 | to settle privately; to solve behind closed doors; to settle out of court | | |
| 15 | 私房 | 私房 | sī fang | si1 fang5 | personal; private; confidential | | |
| 16 | 私交甚笃 | 私交甚篤 | sī jiāo shèn dǔ | si1 jiao1 shen4 du3 | Personal friendship is amicable. (idiom) | | |
| 17 | 私交 | 私交 | sī jiāo | si1 jiao1 | personal friendship | | |
| 18 | 私房钱 | 私房錢 | sī fáng qián | si1 fang2 qian2 | secret purse; secret stash of money | | |
| 19 | 私房 | 私房 | sī fáng | si1 fang2 | privately-owned house; private rooms; private ownings | | |
| 20 | 私法 | 私法 | sī fǎ | si1 fa3 | private law | | |
| 21 | 私地为之 | 私地為之 | sī dì wéi zhī | si1 di4 wei2 zhi1 | to do sth. on the quiet (idiom) | | |
| 22 | 私底下 | 私底下 | sī dǐ xia | si1 di3 xia5 | privately; secretly; confidentially | | |
| 23 | 私仇 | 私仇 | sī chóu | si1 chou2 | personal grudge | | |
| 24 | 私藏 | 私藏 | sī cáng | si1 cang2 | to keep hidden; to keep in one's private possession; secret store; stash | | |
| 25 | 私奔 | 私奔 | sī bēn | si1 ben1 | to elope | | |