What is the meaning of deep?

noun

• The central and most intense or profound part.
  • usage: "in the deep of night"; "in the deep of winter"
• A long steep-sided depression in the ocean floor.
  • synonyms: trench, oceanic abyss
• Literary term for an ocean.
  • usage: "denizens of the deep"

adjective

• Relatively deep or strong; affecting one deeply.
  • usage: "a deep breath"; "a deep sigh"; "deep concentration"; "deep emotion"; "a deep trance"; "in a deep sleep"
• Marked by depth of thinking.
  • usage: "deep thoughts"; "a deep allegory"
• Having great spatial extension or penetration downward or inward from an outer surface or backward or laterally or outward from a center; sometimes used in combination.
  • usage: "a deep well"; "a deep dive"; "deep water"; "a deep casserole"; "a deep gash"; "deep massage"; "deep pressure receptors in muscles"; "deep shelves"; "a deep closet"; "surrounded by a deep yard"; "hit the ball to deep center field"; "in deep space"; "waist-deep"
• Very distant in time or space.
  • usage: "deep in the past"; "deep in enemy territory"; "deep in the woods"; "a deep space probe"
• Extreme.
  • usage: "in deep trouble"; "deep happiness"
• Having or denoting a low vocal or instrumental range.
  • usage: "a deep voice"; "a bass voice is lower than a baritone voice"; "a bass clarinet"
  • synonyms: bass
• Strong; intense.
  • usage: "deep purple"; "a rich red"
  • synonyms: rich
• Relatively thick from top to bottom.
  • usage: "deep carpets"; "deep snow"
• Extending relatively far inward.
  • usage: "a deep border"
• Of darkness. ( very intense)
  • usage: "thick night"; "thick darkness"; "a face in deep shadow"; "deep night"
  • synonyms: thick
• Large in quantity or size.
  • usage: "deep cuts in the budget"
• With head or back bent low.
  • usage: "a deep bow"
• Of an obscure nature.
  • usage: "the new insurance policy is written without cryptic or mysterious terms"; "a deep dark secret"; "the inscrutable workings of Providence"; "in its mysterious past it encompasses all the dim origins of life- Rachel Carson; "rituals totally mystifying to visitors from other lands"
  • synonyms: cryptic, cryptical, inscrutable, mysterious, mystifying
• Difficult to penetrate; incomprehensible to one of ordinary understanding or knowledge.
  • usage: "the professor's lectures were so abstruse that students tended to avoid them"; "a deep metaphysical theory"; "some recondite problem in historiography"
  • synonyms: abstruse, recondite
• Exhibiting great cunning usually with secrecy.
  • usage: "deep political machinations"; "a deep plot"

adverb

• To a great depth; far down.
  • usage: "dived deeply"; "dug deep"
  • synonyms: deeply
• To an advanced time.
  • usage: "deep into the night"; "talked late into the evening"
  • synonyms: late
• To a great distance.
  • usage: "penetrated deep into enemy territory"; "went deep into the woods"