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

深淵[shinen] abyss
淵源[engen] origin
淵叢[ensou] gathering spot

海淵[kaien] ocean depths
深淵に臨むが如し[shinenninozomugagotoshi] like looking out on an abyss
淵酔[ensui] type of imperial banquet held during the Heian period and later