perspicaciousness, abstrusity, drop, reconditeness, profundity, shrewdness, astuteness, profoundness, perspicacity, abstruseness, surface.
His face was partly in the shadow, but there was something striking and strange in the way he looked at her, and a deepness
in his voice when he spoke: " Too much!
Straightway the seed sprang up, because it had no deepness
When I got to the top of the stairs, I heard cries from without, which had been smothered by the deepness
of the dungeon in which I had been labouring to put out the fire.