大だい深しん度ど地ち下かMeaningsNoun1. deep subterranean area; deep undergroundKanji used大large深deep度degrees地ground下belowComposed of大だいlarge; big; great; huge; vast; major; important; serious; severe; prominent; …Prefix深しん度どdepthNoun地ち下かunderground; below the ground; world of the dead; the grave; underground (activities, movement, etc.); secret; illegal; in hidingNoun