速 sù
: fast; rapid; quick; prompt; velocity
Kun Reading
速い | はやい hayai
adjective
: fast; quick; hasty; brisk
: early (in the day, etc.); premature
: (too) soon; not yet; (too) early
: easy; simple; quick
速く | はやく hayaku
adverb
: early; soon;
: quickly; swiftly; rapidly; fast
速さ | はやさ hayasa
noun
: speed; velocity; quickness; rapidity
: earliness
速め | はやめ hayame
no-adjective
: early
: fast
速やか | すみやか sumiyaka
na-adjective
: speedy; prompt; smooth
On Reading
速 | そく soku
suffix
: gear; speed (as in 4 speed automatic transmission and such)