JLPT Kanji Course
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N2 Kanji 24: 効
Meaning：
In Japanese，効 means “be effective”.
How to read it：
Kunyomi：き
Onyomi：こう
How to write it：
Origin：
You can see a man who is crossing his legs.
He can be effective because he is relaxed this way.
So 効 means “be effective”.
| Note: There is some difference between Chinese kanji and Japanese kanji. You should use Japanese kanji, which has a 力 on the right. |
Development:
Vocabulary:
| Level | Word | Reading | Meaning | Type |
|---|---|---|---|---|
| Inter | 効果 | こうか | effect | Noun |
| Inter | 有効 | ゆうこう | effective | na-Adj |
| Inter | 効率 | こうりつ | efficiency | Noun |
| Inter | 効く | きく | be effective | Verb |
| Adv | 効力 | こうりょく | effect | Noun |
| Adv | 効用 | こうよう | utility | Noun |
| Adv | 無効 | むこう | invalid | Noun & na-Adj |
| Adv | 効能 | こうのう | effect | Noun |
| H_Adv | 効き目 | ききめ | effect | Noun |
| H_Adv | 実効 | じっこう | practical effect | Noun |
| H_Adv | 時効 | じこう | acquisitive prescription | Noun |
| H_Adv | 発効 | はっこう | effectuation | Noun & Verb |
| S_Adv | 即効 | そっこう | immediate effect | Noun |
| S_Adv | 特効 | とっこう | special virtue | Noun |
| S_Adv | 失効 | しっこう | expire | Noun & Verb |
| Others | 薬効 | やっこう | medical efficacy | Noun |
| Others | 速効 | そっこう | immediate effect | Noun |
| Others | 卓効 | たっこう | great efficiency | Noun |
| Others | 著効 | ちょこう | remarkable effect | Noun |
| Others | 奏効 | そうこう | response | Noun & Verb |
| Others | 遅効 | ちこう | delayed effect | Noun |
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N2 Kanji 23: 劇
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N2 Kanji 25: 募