\ ˈdēp How to pronounce deep (audio) \

Definition of deep

 (Entry 1 of 3)

1 : extending far from some surface or area: such as
a : extending far downward a deep well a deep chasm
b(1) : extending well inward from an outer surface a deep gash a deep-chested animal
(2) : not located superficially within the body deep pressure receptors in muscles
c : extending well back from a surface accepted as front a deep closet
d : extending far laterally from the center deep borders of lace
e sports : occurring or located near the outer limits of the playing area hit to deep right field
f sports : thrown or hit for a considerable distance : thrown or hit deep (see deep entry 2 sense 3b) a deep pass a deep fly ball
2 : having a specified extension in an implied direction usually downward or backward a shelf 20 inches deep cars parked three-deep
3a : difficult to penetrate or comprehend : recondite deep mathematical problems deep discussions on the meaning of life
b : mysterious, obscure a deep dark secret
c : grave or lamentable in nature or effect in deepest disgrace
d : of penetrating intellect : wise a deep thinker
e : intensely engrossed or immersed she was deep in her book
f : characterized by profundity of feeling or quality a deep sleep also : deep-seated deep religious beliefs
4a of color : high in saturation and low in lightness a deep red
b : having a low musical pitch (see pitch entry 4 sense 4b) or pitch range a deep voice
5a : situated well within the boundaries a house deep in the woods
b : remote in time or space found deep in rural England
c : being below the level of consciousness deep neuroses
d : covered, enclosed, or filled to a specified degree usually used in combination ankle-deep in mud
6 : large deep discounts
7 : having many good players a deep bullpen
in deep water
: in difficulty or distress



Definition of deep (Entry 2 of 3)

1 : to a great depth : deeply still waters run deep tunneled deep into the earth
2 : far on : late danced deep into the night
3 sports
a : near the outer limits of the playing area the shortstop was playing deep
b : long sense 6 threw deep to the wide receiver hit the ball deep to right field



Definition of deep (Entry 3 of 3)

1a : a vast or immeasurable extent : abyss
b(1) : the extent of surrounding space or time the azure deep
(2) nautical : ocean the briny deep
2 : any of the deep portions of a body of water specifically : a generally long and narrow area in the ocean where the depth exceeds 3000 fathoms (5500 meters) the Aldrich Deep in the south Pacific
3 : the middle or most intense part in the deep of winter
4 nautical : any of the fathom points on a sounding line other than the marks (see mark entry 1 sense 2b)

Other Words from deep


deeply adverb
deepness noun

Synonyms & Antonyms for deep

Synonyms: Adjective

Synonyms: Noun

Antonyms: Adjective

Visit the Thesaurus for More 

Choose the Right Synonym for deep


broad, wide, deep mean having horizontal extent. broad and wide apply to a surface measured or viewed from side to side. a broad avenue wide is more common when units of measurement are mentioned rugs eight feet wide or applied to unfilled space between limits. a wide doorway broad is preferred when full horizontal extent is considered. broad shoulders deep may indicate horizontal extent away from the observer or from a front or peripheral point. a deep cupboard deep woods

Examples of deep in a Sentence

Adjective We walked in the deep snow. a deep valley between the mountains The water is deepest in the middle of the lake. She's afraid of swimming in deep water. a plant with deep roots The house has lots of deep closets. She has a small but deep wound on her arm. This enormous canyon is over a mile deep. The shelves are 10 inches deep. He stepped into an ankle-deep puddle of mud. Adverb The ship now lies deep below the water's surface. Our feet sank deeper into the mud. The treasure was buried deep within the ground. Their secret offices were located deep underground. We walked deep into the forest. The soldiers are operating deep within enemy territory. I stood three feet deep in the water. He stepped ankle-deep into a puddle of mud. Noun the kind of cold weather that we usually have only in the deep of winter sailors exploring the farther reaches of the briny deep See More
Recent Examples on the Web: Adjective While the Celtics are deep into their series with the Heat, TNT analysts Stan Van Gundy and Reggie Miller discussed whether either team is the favorite to win the NBA Finals. Gary Washburn,, 21 May 2022 Has an interim coach ever made the NFL or baseball playoffs – much less gone this deep into them? Dave Hyde, Sun Sentinel, 21 May 2022 In a world of deep fakes, propaganda, and fake news, companies will value employees who are open-minded but able to judge the quality of information that inundates us every day. Bernard Marr, Forbes, 20 May 2022 The tech-heavy index is deep into its own bear market. Taylor Telford, Washington Post, 20 May 2022 The director attached to the project had to drop out at the last minute due to scheduling conflicts and Madhavan who had a deep understanding of the script having written it himself after conversations with Narayanan had to take up the mantle. Naman Ramachandran, Variety, 18 May 2022 Cryptocurrencies are known to be the most volatile digital assets and pegging your entire retirement benefits on them requires a deep understanding of the enormous changing trends in the global crypto market. Faustine Ngila, Quartz, 18 May 2022 The event took listeners not only through many of The Judds' most timeless classics, but also deep into other music that had touched both women's hearts. Nancy Kruh,, 16 May 2022 In a deep blue state, Republicans have not won a Senate contest since Lowell P. Weicker Jr. in 1982 as the seat has been dominated by major Democratic leaders such as Chris Dodd, Joe Lieberman, Chris Murphy and Blumenthal. Christopher Keating, Hartford Courant, 7 May 2022 Recent Examples on the Web: Adverb But what Katia has done here is gone deep into what happened, who was involved, and how so many things went wrong — but then, ultimately, were also made right. Brendan O'meara, Longreads, 10 May 2022 If the Panthers go on to skate deep into this NHL spring, circle Monday night and put a star by the names of Sam Reinhart and Carter Verhaeghe for their season-saving goals. Dave Hyde, Sun Sentinel, 9 May 2022 Convinced there must be one nearby, the two set out on a late-night odyssey that takes them deep into New Jersey. Travis Bean, Forbes, 7 May 2022 Temperatures head deep into the 60s for highs, with some spots perhaps topping 70. Washington Post, 7 May 2022 Selena Gomez and Paul Rudd star in a heartbreaking tale that delves deep into grief, illness, and forgiveness. Melanie Curry, ELLE, 7 May 2022 Among your competitors, Amazon has stated plans to go deep into India. Naman Ramachandran, Variety, 6 May 2022 Striking words for a park built on concepts of human ingenuity, but Guardians doesn’t dive deep into human foibles and instead plays the line off as humor. Todd Martensgame Critic, Los Angeles Times, 5 May 2022 The steering is perfectly sharp, the carbon-ceramic brakes scrub speed while maintaining beautiful stability, the torque from the electric motors is instant and overwhelming, and the poise deep into the triple digits is magic. Matt Farah, Car and Driver, 3 May 2022 Recent Examples on the Web: Noun Rivers played 10 deep in Game 7 and some of his lineups were baffling at times when the Sixers needed their stars in the game. Dan Gelston, Star Tribune, 21 June 2021 There is a case to be made that Bishop, Hubert, Latu and Isbell will make up the safety two-deep in some order, but Whittingham referenced Bryson Reeves and Darrien Stewart as also being in the mix. Josh Newman, The Salt Lake Tribune, 8 Apr. 2022 For a five-star offensive line recruit, getting into the two-deep should be the standard, setting you up to, at the bare minimum, be a two-year starter with a chance to go pro after your junior season. Stephen Means, cleveland, 5 Apr. 2022 Another receiver who has been seen working with the first-team offense at times has been Dawson, the former four-star prospect who was the only true freshman to crack Auburn’s two-deep at the start of last season. Tom Green |, al, 4 Apr. 2022 After that, the Buckeyes don’t seem to know who fills out their two-deep on the offensive line. Nathan Baird, cleveland, 15 Apr. 2022 Several jobs on the two-deep are open, especially in the secondary, and the Ducks are installing a new offense and defense. oregonlive, 10 Mar. 2022 Pittman can beat their secondary deep and provides leverage against a chalky Jonathan Taylor. Eddie Brown, San Diego Union-Tribune, 30 Oct. 2021 Impact craters, about a yard deep and encircled by sprays of black earth on the snow, pocked yards and the playground of a school. Explosions had sheared branches from trees and shattered windows. New York Times, 18 Feb. 2022 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'deep.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of deep


before the 12th century, in the meaning defined at sense 1


before the 12th century, in the meaning defined at sense 1


before the 12th century, in the meaning defined at sense 1a

History and Etymology for deep

Adjective, Adverb, and Noun

Middle English dep, from Old English dēop; akin to Old High German tiof deep, Old English dyppan to dip — more at dip

Learn More About deep

Time Traveler for deep

Time Traveler

The first known use of deep was before the 12th century

See more words from the same century

Statistics for deep

Last Updated

24 May 2022

Cite this Entry

“Deep.” Dictionary, Merriam-Webster, Accessed 24 May. 2022.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

More Definitions for deep


\ ˈdēp How to pronounce deep (audio) \
deeper; deepest

Kids Definition of deep

 (Entry 1 of 3)

1 : reaching far down below the surface
2 : reaching far inward or back from the front or outer part a deep cut a deep closet
3 : located well below the surface or well within the boundaries of deep in the ground
4 : coming from well within a deep sigh
5 : completely absorbed deep in thought
6 : hard to understand This story is too deep for me.
7 : mysterious a deep, dark secret
8 : extreme in degree : heavy a deep sleep
9 : dark and rich in color a deep red
10 : low in tone a deep voice

Other Words from deep

deeply adverb


deeper; deepest

Kids Definition of deep (Entry 2 of 3)

1 : to a great depth : deeply
2 : late entry 2 sense 1 She read deep into the night.



Kids Definition of deep (Entry 3 of 3)

1 : a very deep place or part the ocean deeps
2 : ocean sense 1 Pirates sailed the briny deep.
3 : the middle or most intense part the deep of winter


\ ˈdēp How to pronounce deep (audio) \

Medical Definition of deep

1a : extending well inward from an outer surface a deep gash
b(1) : not located superficially within the body or one of its parts deep pressure receptors in muscles
(2) : resulting from or involving stimulation of deep structures deep pain deep reflexes
2 : being below the level of the conscious deep neuroses

Other Words from deep

deeply adverb

More from Merriam-Webster on deep

Nglish: Translation of deep for Spanish Speakers

Britannica English: Translation of deep for Arabic Speakers


Test Your Vocabulary

Which Word Does Not Belong?

  • one green toy robot amidst many red toy robots
  • Which of these words does not mean "nonsense"?
True or False

Test your knowledge - and maybe learn something along the way.

Universal Daily Crossword

A daily challenge for crossword fanatics.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!