虛掩

to partially obscure / (of a door, gate or window) slightly open; ajar; not fully shut; unlocked / (of a jacket or shirt) unbuttoned

to cover up / to close / to surprise

to cover up; to conceal / to close (a door, book etc) / (coll.) to get (one's fingers etc) caught when closing a door or lid / (literary) to launch a surprise attack

emptiness / void / abstract theory or guiding principles / empty or unoccupied / diffident or timid / false / humble or modest / (of health) weak / virtual / in vain