空空洞洞 kōngkōngdòngdòng empty Origin Definitions Defs Strokes Stroke Words Sentences Sents kōngkōngdòngdòng empty 空洞 kōngdòng reduplication cavity; hollow a physical cavity, void, or hole; physically empty or hollow insidekōngkōngdòngdòng insubstantial 空洞 kōngdòng reduplication vacuous devoid of content; shallow or purely speculative (of speech, writing, or theory)