noun

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

   “creatures of the deep”

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

   “the deep of night”

3. A deep shade of colour.

adjective

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

2. (intellectual, social) Complex, involved.

3. (sound, voice) Low in pitch.

   “She has a very deep contralto voice.”

Synonyms: heavy, meaningful, profound, low, low-pitched, bright, rich, vivid

adverb

1. Deeply.