無底洞 Save Sign in to save words Simplified: 无底洞 wúdǐdòng ㄨˊ ㄉㄧˇ ㄉㄨㄥˋ bottomless pit Character by character 無(wú)not to have 底(dǐ)bottom 洞(dòng)cave A Chinese word or character, or English Search Sources CC-CEDICT, CC BY-SA 4.0 pinyinjs, Apache-2.0