効

Selected Good Words to Memorize

• 効く きく to be effective, to work
• 効果 こうか effect, effectiveness

Selected Words with Definitions from WWWJDIC

• 効果 こうか effect; effectiveness; efficacy; result (n,adj-no) ***
• 有効 ゆうこう validity; availability; effectiveness (adj-na,n) **
• 効率 こうりつ efficiency (n) **
• 発効 はっこう coming into effect (n) **
• 無効 むこう invalid; no effect; unavailable (adj-na,n) *
• 効果的 こうかてき effective; successful (adj-na) *
• 実効 じっこう efficacy; efficiency (n) *
• 効く きく to be effective (v5k) *
• 効率的 こうりつてき efficient (adj-na)
• 時効 じこう statute of limitations (n)