きく
to be effective
Power that actually crosses over into the thing and does something there. This medicine is not managing it. A kick きく that lands: きく.
Same reading as 聞く きく, to hear and to ask. 効く is a thing having its effect, medicine or a brake.
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Emaki is not affiliated with, or endorsed by, Kaishi 1.5k or its authors. The word, reading and meaning come from the Kaishi 1.5k deck, used with their permission. The mnemonic, the note and the kanji breakdown are original work, published under CC BY-SA 4.0.