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

御守[omamori] charm
井守[imori] newt (esp. the Japanese fire belly newt, Cynops pyrrhogaster)
看守[kanshu] jailer
看守者[kanshusha] jailer
居留守[irusu] pretending to be out

見守る[mimamoru] to watch over
厳守[genshu] strict observance
固守[koshu] clinging
攻守[koushu] offense and defense
子守り[komori] babysitter

慰留[iryuu] dissuasion from resigning or leaving
遺留[iryuu] bequest
遺留品[iryuuhin] lost articles
押し留める[oshitodomeru] to stop
寄留[kiryuu] temporary residence

居留[kyoryuu] residence
居留守[irusu] pretending to be out
居留地[kyoryuuchi] foreign settlement
局留め[kyokudome] general delivery
繋留[keiryuu] mooring