Meaning

• (with "the") The deep part of a lake, sea, etc.

  "creatures of the deep"

• (with "the") A silent time; quiet isolation.

  "the deep of night"

• A deep shade of colour.

• The profound part of a problem.

• (with "the") The sea, the ocean.

• A fielding position near the boundary.

  "Russell is a safe pair of hands in the deep."

Meaning

• (of a physical distance) Extending far away from a point of reference, especially downwards.

• (intellectual, social) Complex, involved.

• (sound, voice) Low in pitch.

  "She has a very deep contralto voice."

• (of a color) Highly saturated.

  "That's a very deep shade of blue."

• (sleep) Sound, heavy (describing a state of sleep from which one is not easily awoken).

  "He was in a deep sleep."

• Immersed, submerged (in).

  "deep in debt"

• Muddy; boggy; sandy; said of roads.

• (of time) Distant in the past, ancient.

  "deep time"

Meaning

• Deeply.