Emily Dickinson Lexicon

deep (deeper, deepest), adj. [OE díop.] (webplay: artful, divine, downward, easily, far, friend, God, good, grave, hidden, into, land, Lord, low, man, outer, piercing, power, root, secreted, sight, silence, sound, spider, still, takes, thick, thoughts, tree, valley, very, water, way, well).

1. Dark; strongly colored; intensely hued.
2. Profound, complete, intense; (see Genesis 2:21).
3. Unknown; remote from comprehension; not easily understood; (see Job 12:22).
4. Thick; luxuriant.