The ways in that vale were very deep.
Clarendon.
A deep line of operations (Military), a long line. -- Deep mourning (Costume), mourning complete and strongly marked, the garments being not only all black, but also composed of lusterless materials and of such fashion as is identified with mourning garments.
Deep, adv. To a great depth; with depth; far down; profoundly; deeply.
Deep-versed in books, and shallow in himself.
Milton.
Drink deep, or taste not the Pierian spring.
Pope.
Deep, in its usual adverbial senses, is often prefixed to an adjective; as, deep-chested, deep-cut, deep-seated, deep-toned, deep-voiced, "deep-uddered kine."
Deep, n. 1. That which is deep, especially deep water, as the sea or ocean; an abyss; a great depth.
Courage from the deeps of knowledge springs.
Cowley.
The hollow deep of hell resounded.
Milton.
Blue Neptune storms, the bellowing deeps resound.
Pope.
2. That which is profound, not easily fathomed, or incomprehensible; a moral or spiritual depth or abyss.
Thy judgments are a great deep.
Ps. xxxvi. 6.
Deep of night, the most quiet or profound part of night; dead of night.
The deep of night is crept upon our talk.
Shak.
Deep"en (?), v. t. [imp. & p. p. Deepened (?); p. pr. & vb. n. Deepening.] 1. To make deep or deeper; to increase the depth of; to sink lower; as, to deepen a well or a channel.
It would . . . deepen the bed of the Tiber.
Addison.
2. To make darker or more intense; to darken; as, the event deepened the prevailing gloom.
You must deepen your colors.
Peacham.
3. To make more poignant or affecting; to increase in degree; as, to deepen grief or sorrow.