| 1 | 膝盖 | 膝蓋 | xī gài | xi1 gai4 | knee; (Internet slang) to kneel down (in admiration) | | |
| 2 | 膝 | 厀 | xī | xi1 | knee; old variant of 膝 | | |
| 3 | 齐膝 | 齊膝 | qí xī | qi2 xi1 | level with one's knees; knee-length (skirt etc); knee-deep (mud etc) | | |
| 4 | 膝下犹虚 | 膝下猶虛 | xī xià yóu xū | xi1 xia4 you2 xu1 | to have no children (idiom) | | |
| 5 | 膝上型 | 膝上型 | xī shàng xíng | xi1 shang4 xing2 | laptop (computer) | | |
| 6 | 膝上舞 | 膝上舞 | xī shàng wǔ | xi1 shang4 wu3 | lap dance | | |
| 7 | 膝盖骨 | 膝蓋骨 | xī gài gǔ | xi1 gai4 gu3 | kneecap | | |
| 8 | 水深过膝 | 水深過膝 | shuǐ shēn guò xī | shui3 shen1 guo4 xi1 | The water is above the knees. (idiom) | | |
| 9 | 双膝 | 雙膝 | shuāng xī | shuang1 xi1 | both knees | | |
| 10 | 绕膝承欢 | 繞膝承歡 | rào xī chéng huān | rao4 xi1 cheng2 huan1 | to live with one's parents, thus bringing them happiness (idiom) | | |
| 11 | 绕膝 | 繞膝 | rào xī | rao4 xi1 | (children) run around parent's knees; fig. to stay to look after one's elderly parents | | |
| 12 | 屈膝行礼 | 屈膝行禮 | qū xī xíng lǐ | qu1 xi1 xing2 li3 | to drop a curtsy (idiom) | | |
| 13 | 屈膝礼 | 屈膝禮 | qū xī lǐ | qu1 xi1 li3 | curtsy | | |
| 14 | 抱膝而坐 | 抱膝而坐 | bào xī ér zuò | bao4 xi1 er2 zuo4 | to sit with one's arms around one's knees (idiom) | | |
| 15 | 盘膝 | 盤膝 | pán xī | pan2 xi1 | cross-legged | | |
| 16 | 拍膝而歌 | 拍膝而歌 | pāi xī ér gē | pai1 xi1 er2 ge1 | to sing, beating time on one's knees (idiom) | | |
| 17 | 奴颜婢膝 | 奴顏婢膝 | nú yán bì xī | nu2 yan2 bi4 xi1 | servile and bending the knee (idiom); fawning; bending and scraping to curry favor | | |
| 18 | 牛膝草 | 牛膝草 | niú xī cǎo | niu2 xi1 cao3 | hyssop (Hyssopus officinalis) | | |
| 19 | 牛膝 | 牛膝 | niú xī | niu2 xi1 | Achyranthes bidentata (root used in Chinese medicine) | | |
| 20 | 男人膝下有黄金 | 男人膝下有黃金 | nán rén xī xià yǒu huáng jīn | nan2 ren2 xi1 xia4 you3 huang2 jin1 | lit. the man has gold under his knees; fig. a man who does not easily kneel in front of others (owing to pride or moral integrity) | | |
| 21 | 磕膝盖 | 磕膝蓋 | kē xī gài | ke1 xi1 gai4 | (dialect) knee | | |
| 22 | 接膝交言 | 接膝交言 | jiē xī jiāo yán | jie1 xi1 jiao1 yan2 | to have an intimate conversation (idiom) | | |
| 23 | 护膝 | 護膝 | hù xī | hu4 xi1 | kneepad; knee brace | | |
| 24 | 促膝谈心 | 促膝談心 | cù xī tán xīn | cu4 xi1 tan2 xin1 | to sit side-by-side and have a heart-to-heart talk (idiom) | | |
| 25 | 促膝 | 促膝 | cù xī | cu4 xi1 | lit. knees pressed close; intimate; seated side by side; in close contact | | |