Pronunciation: (dēp'lē), [key]
1. at or to a considerable extent downward; well within or beneath a surface.
2. to a thorough extent or profound degree: deeply pained; deeply committed.
3. with depth of color, tone, sound, etc.
4. with great cunning, skill, and subtlety.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.