効く きく kiku to be effective JLPT N3 godan verb Common word Other meanings 2. to work, to function well 3. to be possible (to do, use, etc.), to be able to The kanji in this word 効 merit, efficacy, efficiency JLPT N2 · Strokes 8 In this level 機械 議会 期間 機関 企業 期限 機嫌 気候 岸 生地 Back to the JLPT N3 list Practise these words