Compounds of 速

• 亜音速
  (n,adj-no) subsonic speed
• 亜光速
  (n) near light speed
  sublight speed
• 逸速く
  (adv) promptly
  quickly
  without delay
• 加速器
  (n) (electron) accelerator
• 加速度
  (n) acceleration
• 快速船
  (n) fast ship
• 角速度
  (n) angular velocity
• 群速度
  (n) group velocity (in fibre optics, fiber optics)
• 軽速歩
  (n) posting trot (horse gait)
• 減速材
  (n) moderator
• 光速度
  (n) the speed of light
• 高速化
  (n) (comp) increase in speed, acceleration
• 高速度
  (n) high speed
  (P)
• 剛速球
  (n) strong fast ball
• 最速化
  (n,vs) (speed) optimization
• 新快速
  (n) limited express (train, faster than an express)
• 線速度
  (n) linear velocity
• 遷音速
  (n) transonic (speed)
  transsonic (speed)
• 全速力
  (n) full speed
  (P)
• 素速い
  (adj-i) (1) fast
  quick
  prompt
  nimble
  agile
  (2) quick (to understand)
  sharp (judgement)
• 足速い
  (adj-i) swift-footed
  light-footed
• 速まる
  (v5r,vi) (1) to move ahead (three hours, etc.)
  to move up
  (2) to quicken
  to speed up
  to gather speed
  (3) to be hasty
  to be rash
• 速める
  (v1,vt) to hasten
  to quicken
  to expedite
  to precipitate
  to accelerate
  (P)
• 速やか
  (adj-na) speedy
  prompt
  smooth
  (P)
• 速乾性
  (adj-no) quick drying (properties)
• 速記者
  (n) stenographer
  writer of shorthand
• 速記術
  (n) shorthand
  stenography
• 速記録
  (n) shorthand or stenographic notes
• 速射砲
  (n) rapid-fire gun or cannon
• 速達便
  (n) (abbr) special delivery mail
  express delivery post
  (P)