速 そく Meanings Suffix, Counter gear; speed (e.g. 4-speed transmission) Kanji 速 speed. Read as ソク. Words containing 速 速度 (そくど) speed 高速 (こうそく) high-speed 急速 (きゅうそく) rapid (e.g. progress) And 284 more. Word lists Counters Core 5000 Spoken Encyclopedia Jinuma: Japanese Dictionary · Word lists