私底下 Save Sign in to save words sīdǐxia ㄙ ㄉㄧˇ ˙ㄒㄧㄚ privately secretly confidentially Character by character 私(sī)personal 底(dǐ)bottom 下(xia)down A Chinese word or character, or English Search Sources CC-CEDICT, CC BY-SA 4.0 pinyinjs, Apache-2.0