万丈 | wàn zhàng | lit. ten thousand fathoms / fig. extremely high or deep / lofty / bottomless | |
无底 | wú dǐ | bottomless | |
无底洞 | wú dǐ dòng | bottomless pit | |
欲壑难填 | yù hè nán tián | bottomless pit of desire (idiom) / insatiable greed / carnal cravings are never satisfied and are a main obstruction on the path to enlightenment | |
无底坑 | wú dǐ kēng | the bottomless pit (Hell in the Bible) / pitless (elevator) |