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

意味深重[imishinchou] with profound (often hidden) meaning
奥深い[okufukai] profound
海深[kaishin] depth of the sea
疑い深い[utagaibukai] doubting
興味深い[kyoumibukai] very interesting

深ける[fukeru] to get late
根深い[nebukai] deep-rooted
思慮深い[shiryobukai] prudent
執念深い[shuunenbukai] vindictive
嫉妬深い[shittobukai] (deeply) jealous