deep

adjective

1. Extending far down from the top, or surface, to the bottom, literally or figuratively.
2. Positioned far from the surface or other reference point, especially down through something or into something.
3. Positioned far from the boundaries of or main approaches to (the specified place); interior.
4. Far in extent in another (non-downwards, but generally also non-upwards) direction, especially front-to-back.
5. Extending to a level or length equivalent to the stated thing.
6. In a (specified) number of rows or layers.
7. Voluminous.
8. 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.
9. Penetrating a long way, especially a long way forward.
10. Positioned back, or downfield, towards one's own goal, or towards or behind one's baseline or similar reference point.
11. Further into the body.
12. Profound, having great meaning or import, but possibly obscure or not obvious.
13. Significant, not superficial, in extent.
14. Hard to penetrate or comprehend; profound; intricate; obscure.
15. Of penetrating or far-reaching intellect; not superficial; thoroughly skilled; sagacious; cunning.
16. Inner, underlying, true; relating to one’s inner or private being rather than what is visible on the surface.
17. Low in pitch.
18. Highly saturated; rich.
19. Sound, heavy (describing a state of sleep from which one is not easily awoken).
20. Muddy; boggy; sandy; said of roads.