直向[hitamuki] earnest
安直[anchoku] inexpensive
一直[icchoku] lining out to first base
一直線[icchokusen] straight line
鉛直[enchoku] perpendicular

下駄直し[getanaoshi] repairing clogs
開き直る[hirakinaoru] to become defiant
気を取り直す[kiwotorinaosu] to completely rethink
急転直下[kyuutenchokka] suddenly and precipitately
居直る[inaoru] to sit up properly straight

雨靴[amagutsu] waterproof shoes
隔靴掻痒[kakkasouyou] being frustrated because something is not quite as hoped (just as one cannot scratch an itch from outside a shoe)
革靴[kawagutsu] leather shoes
靴一足[kutsuissoku] pair of shoes
靴屋[kutsuya] shoemaker

靴音[kutsuoto] walking sound
靴下[kutsushita] socks
靴型[kutsugata] shoe last
靴擦れ[kutsuzure] shoe sore