Compounds of 足

• 足元にもおよばない
  (exp) to be no match for
  to not hold a candle to
• 抜き足差し足忍び足
  (exp) stealthy footsteps
  walking on tiptoe
• 衣食足りて礼節を知る
  (exp) the poor can't afford manners
  only when basic needs for living are met can people spare the effort to be polite
• 注意力不足活動過多症
  (n) attention deficit-hyperactivity disorder
  ADHD