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

満更夢ではない[manzarayumedehanai] not altogether a dream
悪夢[akumu] nightmare
一炊の夢[issuinoyume] an empty dream
一夢[ichimu] (a) dream
旧夢[kyuumu] ancient dream

凶夢[kyoumu] bad dream
初夢[hatsuyume] year's first dream
酔生夢死[suiseimushi] idling one's life away
正夢[masayume] dream that comes true