落空 Traditional form: 落空 Pinyin (reading): làkòng Definitions: to omit; to neglect (to do sth) to miss a chance; to let an opportunity slip by Characters: 落 - to fall, to drop; surplus, net income 空 - hollow, empty, deserted, bare Traditional characters: 落 - to fall, to drop; surplus, net income 空 - hollow, empty, deserted, bare