落空
luò​kōnglà​kòng

to come to nothing

luò​kōng to come to nothing
  1. 落 luò verbparticle
    to fall
    to fall; to drop; to go down; (of the sun or moon) to set; (of a tide) to go out; to decline; to sink
  2. 空 kōng
    in vain
    to no avail; for nothing; uselessly; fruitlessly

là​kòng to omit
  1. 落 là verb
    to leave behind
    to leave behind; to forget to bring; to leave out; to omit
  2. 空 kòng adjective
    vacant
    unoccupied; blank; unused space; a gap or opening

luò​kōng unrealistic
  1. 落 luò verbparticle
    to fall
    to fall; to drop; to go down; (of the sun or moon) to set; (of a tide) to go out; to decline; to sink
  2. 空 kōng adjective
    impractical
    impractical; theoretical; unreal; fictitious