Search the dictionary A Chinese word or character, or English Search 6 entries. kūkū 矻矻 assiduously kǔkǔ 苦苦 strenuously zīzīkūkū 孜孜矻矻 diligently xīnxīnkǔkǔ 辛辛苦苦 painstakingly kūkutítí 哭哭啼啼 to weep endlessly kǔkǔāiqiú 苦苦哀求 to entreat piteously