2. LINEAR DIMENSIONS
[Nouns] depth; deepness; profundity, depression (concavity) [more].
hollow, pit, shaft, well, crater; gulf [more]; bowels of the earth, botttomless pit, hell.
soundings, depth of water, water, draught, submersion; plummet, sound, probe; sounding rod, sounding line; lead.
[Adjectives] deep, deep seated; profound, sunk, burried; submerged [more]; subaqueous, submarine, subterranean, subterrene; underground.
bottomless, soundless, fathomless; unfathomed, unfathomable; abysmal; deep as a well; bathycolpian; benthal, benthopelagic; downreaching, yawning.
knee deep, ankle deep.