verb·n3

効きく

To be effective; to work; to have an effect

薬くすりが効きく

この方法ほうほうは効きく

Conjugations

dictionary効くkiku

to be effective

negative効かないkikanai

is not effective / does not work

polite効きますkikimasu

is effective (polite)

polite negative効きませんkikimasen

is not effective (polite)

te form効いてkiite

and is effective / please be effective (connective)

past効いたkiita

was effective

past negative効かなかったkikanakatta

was not effective

conditional効けばkikeba

if it is effective