adj. 最深的，最深

Deep \Deep\ (d[=e]p), a. [Compar. {Deeper} (d[=e]p"[~e]r);
superl. {Deepest} (d[=e]p"[e^]st).] [OE. dep, deop, AS.
de['o]p; akin to D. diep, G. tief, Icel. dj[=u]pr, Sw. diup,
Dan. dyb, Goth. diups; fr. the root of E. dip, dive. See
{Dip}, {Dive}.]
1. Extending far below the surface; of great perpendicular
dimension (measured from the surface downward, and
distinguished from high, which is measured upward); far to
the bottom; having a certain depth; as, a deep sea.

The water where the brook is deep. --Shak.

2. Extending far back from the front or outer part; of great
horizontal dimension (measured backward from the front or
nearer part, mouth, etc.); as, a deep cave or recess or
wound; a gallery ten seats deep; a company of soldiers six
files deep.

Shadowing squadrons deep. --Milton.

Safely in harbor
Is the king's ship in the deep nook. --Shak.

3. Low in situation; lying far below the general surface; as,
a deep valley.

4. Hard to penetrate or comprehend; profound; -- opposed to
{shallow} or {superficial}; intricate; mysterious; not
obvious; obscure; as, a deep subject or plot.

Speculations high or deep. --Milton.

A question deep almost as the mystery of life. --De
Quincey.

O Lord, . . . thy thoughts are very deep. --Ps.
xcii. 5.

5. Of penetrating or far-reaching intellect; not superficial;
thoroughly skilled; sagacious; cunning.

Deep clerks she dumbs. --Shak.

6. Profound; thorough; complete; unmixed; intense; heavy;
heartfelt; as, deep distress; deep melancholy; deep
horror. ``Deep despair.'' --Milton. ``Deep silence.''
--Milton. ``Deep sleep.'' --Gen. ii. 21. ``Deeper
darkness.'' --Hoole. ``Their deep poverty.'' --2 Cor.
viii. 2.

An attitude of deep respect. --Motley.

7. Strongly colored; dark; intense; not light or thin; as,
deep blue or crimson.

8. Of low tone; full-toned; not high or sharp; grave; heavy.
``The deep thunder.'' --Byron.

The bass of heaven's deep organ. --Milton.

9. Muddy; boggy; sandy; -- said of roads. --Chaucer.

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.