profundity, profoundness, astuteness, breadth, richness, dimension, deep, nuance, complexity, intensity, more...

shallowness, superficiality, surface, height, emptiness

shallow, deep, profound, superficial, abyssal, submerged, low, high, more...

greater, more, maximum, average, considerable, sufficient, full, total, shallower, optical, certain

bathysphere reading,   profound quality,   layered meaning,   the 3rd dimension,   measure depths,   distance down,   make more shallow,   rich meaning