- The definition of deep is going far down or far away, something strongly felt, or something that is hard to understand.
- An example of deep is a hole that goes miles underground.
- An example of deep is a love between old friends.
- An example of deep is a thought that is very difficult to express.
- Deep is defined as at a great depth or a long period of time or space.
- An example of deep is digging far into the sea.
- An example of deep is working late into the night or running far back into the opponent's zone to catch a football throw.
- Deep means a part of water, earth or space that is known to be one of most extreme known to science.
An example of deep is a part of the ocean that goes down more than 18,000 feet below the surface.
A castles deep well.
deep definition by Webster's New World
- extending far downward from the top or top edges, inward from the surface, or backward from the front: a deep cut, a deep lake, a deep drawer
- extending down, inward, etc. a specified length or distance: water eight feet deep
- located far down or back: deep in the outfield
- coming from or going far down or back: a deep breath
- far off in time or space: the deep past
- hard to understand; abstruse: a deep book
- extremely grave or serious: in deep trouble
- strongly felt: deep love
- intellectually profound: a deep discussion
- tricky and sly; devious: deep dealings
- carefully guarded: a deep secret
- dark and rich: a deep red
- sunk in or absorbed by: with in: deep in thought
- great in degree; intense: deep joy
- heavy and unbroken: a deep sleep
- much involved: deep in debt
- of low pitch or range: a deep voice
- large; big: deep cuts in the budget
- Sports having many good players in reserve: a team deep in pitching
Origin: Middle English dep ; from Old English deop, akin to German tief, Gothic diups ; from Indo-European base an unverified form dheub-, deep, hollow from source dip, dump
- a deep place or any of the deepest parts, as in water or earth
- the extent of encompassing space or time, of the unknown, etc.
- the middle part; part that is darkest, most silent, etc.: in the deep of night
- Naut. any of the unmarked fathom points between those marked on a lead line
Origin: ME dep < OE deop
Origin: ME depe < OE deope
deep definition by American Heritage Dictionary
adjective deep·er, deep·est
- a. Extending far downward below a surface: a deep hole in the river ice.b. Extending far inward from an outer surface: a deep cut.c. Extending far backward from front to rear: a deep walk-in refrigerator.d. Extending far from side to side from a center: a deep yard surrounding the house.e. Far distant down or in: deep in the woods.f. Coming from or penetrating to a depth: a deep sigh.g. Sports Located or taking place near the outer boundaries of the area of play: deep left field.
- Extending a specific distance in a given direction: snow four feet deep.
- Far distant in time or space: deep in the past.
- a. Difficult to penetrate or understand; recondite: a deep metaphysical theory.b. Of a mysterious or obscure nature: a deep secret; ancient and deep tribal rites.c. Very learned or intellectual; wise: a deep philosopher.d. Exhibiting great cunning or craft: deep political machinations.
- a. Of a grave or extreme nature: deep trouble; deepest deceit.b. Very absorbed or involved: deep in thought; deep in financial difficulties.c. Profound in quality or feeling: a deep trance; deep devotion.
- Rich and intense in shade. Used of a color: a deep red.
- Low in pitch; resonant: a deep voice.
- Covered or surrounded to a designated degree. Often used in combination: waist-deep in the water; ankle-deep in snow.
- Large in quantity or size; big: deep cuts in the budget.
- Sports Having a sufficient number of capable reserve players: That team is not very deep.
- To a great depth; deeply: dig deep; feelings that run deep.
- Well along in time; late: worked deep into the night.
- Sports Close to the outer boundaries of the area of play: played deep for the first three innings; ran deep into their opponents' territory.
- a. A deep place in land or in a body of water: drowned in the deep of the river.b. A vast, immeasurable extent: the deep of outer space.
- The extent of encompassing time or space; firmament.
- The most intense or extreme part: the deep of night.
- The ocean.
- Nautical A distance estimated in fathoms between successive marks on a sounding line.
Origin: Middle English dep, from Old English dēop; see dheub- in Indo-European roots.
- deepˈly adverb
- deepˈness noun
deep - Phrases/Idioms
go off the deep endInformal
- to plunge rashly into an enterprise
- to become angry or excited
in deep water
in deep water