孜 (w)

(zī) hard-working; industrious

孜孜 (w)

(zīzī) diligent; hardworking; industrious; assiduous

孜孜不倦 (w)

(zīzībùjuàn) lit. diligent and never slacking (idiom); continuous concentrated effort; assiduous (in study); to concentrate

孜孜以求 (w)

(zīzīyǐqiú) diligent and tireless (idiom)

孜孜矻矻 (w)

(zīzīkūkū) diligently

孜然 (w)

(zīrán) cumin (Cuminum cyminum)

孜然芹 (w)

(zīránqín) cumin