御中[onaka] stomach
御話中[ohanashichuu] busy (phone)
アル中[aruchuu] alcoholism
π中間子[paichuukanshi] pi meson
暗中[anchuu] in the dark

暗中摸索[anchuumosaku] groping in the dark
意中[ichuu] one's mind
意中の女[ichuunoonna] sweetheart
井の中の蛙大海を知らず[inonakanokawazutaikaiwoshirazu] parochial
一日中[ichinichijuu] all day long

奥さん[okusan] wife
奥さん孝行[okusankoukou] devoted to one's wife
奥の院[okunoin] inner sanctuary
奥の間[okunoma] inner room
奥の手[okunote] left hand

奥まって[okumatte] secluded
奥まる[okumaru] to lie deep in
奥意[okui] true intention
奥印[okuin] official seal