ユウ, ヨウ, ふか.い, かす.か, くら.い, しろ.い

seclude, confine to a room, deep, profound, secluded, faint, dark, tranquil, calm

JLPT1 G7 S9 F1996

An element# doubling slender thread (→ slight, obscure objects) + mountain → obscure, remote mountain, *far removed from human habitation* → *unknown*; *deep*; *dark*; *profound*; *faint* → *afterlife*.

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