无效 wúxiào HSK6 invalid Definitions Defs Origin Strokes Stroke Words Sentences Sents Showing: ineffective All meanings 4 wúxiào 4 invalid 3ineffective 1 1 sentence for 无效 (wúxiào — ineffective) 这种治疗方法对他的病情完全无效。 zhè zhǒng zhìliáo fāngfǎ duì tā de bìngqíng wánquán wúxiào. This treatment method is completely ineffective for his condition. Source: Dong Chinese Dictionary