孜孜 zīzī diligent Origin Definitions Defs Strokes Stroke Words Sentences Sents 孜孜不倦 zīzībùjuàn assiduous working with tireless persistence and continuous concentrated effort, especially in study or work孜孜以求 zīzīyǐqiú striving To pursue something diligently and tirelessly孜孜矻矻 zīzīkūkū diligently to work diligently and tirelessly喜孜孜 xǐzīzī gleeful pleased; happy