| 1 | 牢固 | 牢固 | láo gù | lao2 gu4 | firm; secure | | |
| 2 | 牢牢 | 牢牢 | láo láo | lao2 lao2 | firmly; safely | | |
| 3 | 牢 | 牢 | láo | lao2 | firm; sturdy; fold (for animals); sacrifice; prison | | |
| 4 | 牢实 | 牢實 | láo shi | lao2 shi5 | solid; strong; firm; secure | | |
| 5 | 牢头 | 牢頭 | láo tóu | lao2 tou2 | jailer (old) | | |
| 6 | 太牢 | 太牢 | tài láo | tai4 lao2 | (in ancient times) sacrificial animal (cow, sheep or pig) | | |
| 7 | 牢房 | 牢房 | láo fáng | lao2 fang2 | jail cell; prison cell | | |
| 8 | 牢骚 | 牢騷 | láo sāo | lao2 sao1 | discontent; complaint; to complain | | |
| 9 | 牢落不群 | 牢落不群 | láo luò bù qún | lao2 luo4 bu4 qun2 | to keep oneself aloof (idiom) | | |
| 10 | 牢靠妥当 | 牢靠妥當 | láo kào tuǒ dàng | lao2 kao4 tuo3 dang4 | reliable; solid and dependable | | |
| 11 | 牢靠 | 牢靠 | láo kào | lao2 kao4 | firm and solid; robust; reliable | | |
| 12 | 牢记在心 | 牢記在心 | láo jì zài xīn | lao2 ji4 zai4 xin1 | to keep firmly in mind (idiom) | | |
| 13 | 坐牢 | 坐牢 | zuò láo | zuo4 lao2 | to be imprisoned | | |
| 14 | 牢记 | 牢記 | láo jì | lao2 ji4 | to keep in mind; to remember | | |
| 15 | 吃牢饭 | 吃牢飯 | chī láo fàn | chi1 lao2 fan4 | to do prison time (Tw) | | |
| 16 | 牢愁莫遣 | 牢愁莫遣 | láo chóu mò qiǎn | lao2 chou2 mo4 qian3 | to be chronically melancholic (idiom) | | |
| 17 | 牢不可破 | 牢不可破 | láo bù kě pò | lao2 bu4 ke3 po4 | firmly unbreakable | | |
| 18 | 坚牢 | 堅牢 | jiān láo | jian1 lao2 | prison; jail; strong; firm | | |
| 19 | 画地为牢 | 畫地為牢 | huà dì wéi láo | hua4 di4 wei2 lao2 | lit. to be confined within a circle drawn on the ground (idiom); fig. to confine oneself to a restricted range of activities | | |
| 20 | 发牢骚 | 發牢騷 | fā láo sāo | fa1 lao2 sao1 | to whine; to be grouchy | | |
| 21 | 蹲牢 | 蹲牢 | dūn láo | dun1 lao2 | see 蹲大牢 | | |
| 22 | 蹲大牢 | 蹲大牢 | dūn dà láo | dun1 da4 lao2 | to be behind bars | | |
| 23 | 钉牢 | 釘牢 | dīng láo | ding1 lao2 | to gaze intently at; to scrutinize; to clinch (a nail); to nail down | | |
| 24 | 地牢 | 地牢 | dì láo | di4 lao2 | prison; dungeon | | |
| 25 | 大牢 | 大牢 | dà láo | da4 lao2 | prison | | |