効 means 'effective'

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Strokes : 8    Frequency: 664   JLPT: N2    Usefulness: 4    Study set: 4-5    Grade: 5   Intermediate lesson: 40    Beginner lesson: -   Begins 26 words   Used in 217 words   Used in 9 names   Component in 1 kanji (0 Jōyō)
Jōyō (常用)
   to be effective
Kun    ききめ   なら
⿰   mix; mixed   effort  
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In the most useful 10,000 words in Japanese, 効 is used 8 times, read 2 ways.
Across all words in Japanese, 効 is used 207 times, read 2 ways.
コウ : 196 words FIND ALL
1. effect; effectiveness; efficacy; result
2. effects (e.g. sound effects, visual effects, special effects)  (see also: 音響効果)
(click the word for examples and links)
: 11 words FIND ALL
'ku' godan verb, intransitive verb
1. to be effective; to show effect  (see also: 薬が効く)
2. to do its work; to carry out its function well  (see also: 目が利く)
(click the word to view an additional 1 meaning and 2 forms, useful expressions, examples and links)
An additional 10 less common words include 効 but the reading has not yet been categorized.
Henshall: 697 (originally: 671)  Joy o' Kanji : 671  Key to Kanji: 314 

Cascading kanji view

コウ   effective   き to be effective   
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リョク   リキ   ちから effort; power   
コウ   mix; mixed   まぜる to mix, stir   まざる    まじる to be mixed together   まじえる to mix, intersperse   まじわる to intersect   か to take turns   かわす to exchange   
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ロク   むっ six   む    むい    む    
フ   ちち father   
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katakana 'ha'; eight
crossed swords
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