(bound form) the sky; outer space; the air

empty; hollow; void of content; containing nothing

leisure; free time; a gap in time

unoccupied; blank; unused space; a gap or opening

to leave a space blank; to vacate; to make room by leaving something empty

impractical; theoretical; unreal; fictitious

(Buddhist term) the concept of sunyata or emptiness, meaning things have no permanent self-nature

to no avail; for nothing; uselessly; fruitlessly

a Chinese surname

(literary) only; just; merely

a shortage of funds; a deficit; a debt