効く

Japanese

Kanji in this term
効
き Grade: 5
kun’yomi

Alternative forms

利く

Verb

効く (shinjitai kanji, kyūjitai kanji 效く, godan conjugation, hiragana きく, rōmaji kiku)

to be effective; have effect; act upon
to work; to hold; to have
彼 (かれ)は鼻 (はな)が効 (き)く。
Kare wa hana ga kiku.
He has a keen nose.

私 (わたし)は左手 (ひだりて)が効 (き)かなくなった。
Watashi wa hidarite ga kikanakunatta.
I have lost use of my left hand.

Conjugation

Conjugation of "効く" (See Appendix:Japanese verbs.)

Stem forms
Imperfective (未然形)	効か	きか	kika
Continuative (連用形)	効き	きき	kiki
Terminal (終止形)	効く	きく	kiku
Attributive (連体形)	効く	きく	kiku
Hypothetical (仮定形)	効け	きけ	kike
Imperative (命令形)	効け	きけ	kike
Key constructions
Passive	効かれる	きかれる	kikareru
Causative	効かせる効かす	きかせるきかす	kikaseru kikasu
Potential	効ける	きける	kikeru
Volitional	効こう	きこう	kikō
Negative	効かない	きかない	kikanai
Negative continuative	効かず	きかず	kikazu
Formal	効きます	ききます	kikimasu
Perfective	効いた	きいた	kiita
Conjunctive	効いて	きいて	kiite
Hypothetical conditional	効けば	きけば	kikeba

Derived terms

効 (き)き目 (め) (kikime, “effect”)

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