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効く
利く
Readings

kiku
English
Godan verb with 'ku' ending
Intransitive verb
See also: 薬が効く
usu. 効く
to be effective, to take effect, to be good (for)

Godan verb with 'ku' ending
Intransitive verb
See also: 目が利く
usu. 利く for body senses, functions, etc.
to work, to function well

Godan verb with 'ku' ending
Intransitive verb
See also: 割引が効く
to be possible (to do, use, etc.), to be able to

Godan verb with 'ku' ending
Transitive verb
See also: 聞く・8
to taste (alcohol), to try

Your personal translations
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Conjugated forms
Present, Future 効く, 効きます
[does], will [do]
効かない, 効きません
doesn't [do], will not [do]
Past 効いた, 効きました
[did]
効かなかった, 効きませんでした
didn't [do]
Te-form, Continuative 効いて, 効きまして 効かないで, 効きませんで 効かなくて
Kanjis
ON: コウ KUN: き.く, ききめ, なら.う
merit, efficacy, efficiency, benefit

Stroke: 8 Grade: 5 JLPT: N2 SKIP: 1-6-2 FC: 0442.2


ON: KUN: き.く
profit, advantage, benefit

Stroke: 7 Grade: 4 JLPT: N2 SKIP: 1-5-2 FC: 2290.0


Phrases
この丸薬は心臓に効く。
Parts: 此の (この) 丸薬 (がんやく) 心臓 (しんぞう) 効く (きく)
These pills act on the heart.

よくもまあ私にそんな口がきけるね。
Parts: 善くもまあ (よくもまあ) (わたし) そんな (くち) 効く (きける)
How dare you speak to me like that?

私は5万円までつけがきく。
Parts: (わたし) (まん) (えん) (まで) 付ける (つけ) 効く (きく)
My credit is good for 50,000 yen.