空虚 | kōng xū | hollow / emptiness / meaningless | |
虚 | xū | emptiness / void / abstract theory or guiding principles / empty or unoccupied / diffident or timid / false / humble or modest / (of health) weak / virtual / in vain | |
空性 | kōng xìng | emptiness | |
太虚 | tài xū | great emptiness / the void / heaven / the skies / universe / cosmos / original essence of the cosmos |