速そく力りょくそくりょくCommon wordJLPTN2Freq.FrequencyTop 50,000Meanings1nounspeed; velocityGeneral noun for speed; often used in technical or formal contexts, but also in everyday language. Slightly more formal than 速さ (はやさ).この車くるまは速そく力りょくが足たりない。This car lacks speed.船ふねは速そく力りょくを上あげて進すすんだ。The ship increased speed and moved forward.