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

この外[konohoka] besides
その外[sonota] etc.
ピントが外れる[pintogahazureru] to be out of focus
案外[angai] unexpectedly
もっての外[mottenohoka] absurd

以外[igai] with the exception of
意外[igai] unexpected
意想外[isougai] unexpected
域外[ikigai] outside the area
員外[ingai] non-membership

参洛[sanraku] going to the capital
上洛[jouraku] proceeding to the capital
入洛[juraku] proceeding to Kyoto
洛中[rakuchuu] inside the capital
京洛[kyouraku] capital (esp. Kyoto)

洛内[rakunai] in Kyoto or the capital
洛外[rakugai] outside Kyoto or the capital
洛中洛外[rakuchuurakugai] in and around the city of Kyoto
洛陽の紙価を高める[rakuyounoshikawotakameru] to be highly-reputed and sell extremely well (of a printed literary work)
洛中洛外図[rakuchuurakugaizu] views in and around the city of Kyoto (paintings and drawings)