Profound, having great meaning or import, but possibly obscure or not obvious.
In a (specified) number of rows or layers.
Positioned or reaching far, especially down through something or into something.
Voluminous.
Far in extent in another (non-downwards, but generally also non-upwards) direction away from a point of reference.
Low in pitch.
Far from the center of the playing area, near to the boundary of the playing area, either in absolute terms or relative to a point of reference.
Distant in the past, ancient.
Significant, not superficial, in extent.
Muddy; boggy; sandy; said of roads.
Extending far down from the top, or surface, to the bottom, literally or figuratively.
Penetrating a long way, especially a long way forward.
Hard to penetrate or comprehend; profound; intricate; obscure.
Positioned back, or downfield, towards one's own goal, or towards or behind one's baseline or similar reference point.
Thick.
Extending to a level or length equivalent to the stated thing.
Highly saturated; rich.
Sound, heavy (describing a state of sleep from which one is not easily awoken).
Of penetrating or far-reaching intellect; not superficial; thoroughly skilled; sagacious; cunning.
In a profound, not superficial, manner.
In large volume.
Back towards one's own goal, baseline, or similar.
Far, especially far down through something or into something, physically or figuratively.
A deep hole or pit, a water well; an abyss.
A deep shade of colour.
A silent time; quiet isolation.
The deep part of a lake, sea, etc.
The profound part of a problem.
A fielding position near the boundary.
The sea, the ocean.
Not amusing.