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

奇矯[kikyou] eccentric
矯める[tameru] to straighten
矯めなおす[tamenaosu] to set up again
矯激[kyougeki] radical
矯正[kyousei] correction

矯風[kyoufuu] reform of morals
歯牙矯正術[shigakyouseijutsu] orthodontia
歯列矯正[shiretsukyousei] orthodontia
矯めつ眇めつ[tametsusugametsu] scrutiny
矯正視力[kyouseishiryoku] corrected eyesight