98
効
Effect, Effective
き.く, き.きめ
JLPT N2
Interesting Fact
Medicine packages in Japan often describe whether a drug is 効く (kiku), meaning 'it works,' or list 効果 (kōka), meaning 'its effectiveness.'
Memory Trick
Imagine taking medicine and feeling better within minutes. When something works exactly as intended, it reminds you of 効 meaning 'effective.'
Readings
Onyomi: コウ (kou)
Kunyomi: き.く, き.きめ
Example Words
効果
こうか (kouka)
Effect
有効
ゆうこう (yuukou)
Valid, Effective
効く
きく (kiku)
To be effective
効率
こうりつ (kouritsu)
Efficiency
Example Sentence
この 薬 は よく 効きます。
この くすり は よく ききます。
kono kusuri wa yoku kikimasu
This medicine works well.