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• in-depth
  in-depth

  adjective

  extensive, thorough, or profound.
• in depth
  in depth

  Profoundly, thoroughly, as in It will take years to cover the entire subject in depth. [Mid-1900s]

in-depth

American  

[in-depth] / ˈɪnˈdɛpθ /

adjective

1. extensive, thorough, or profound.

   an in-depth analysis of the problem.

2. well-balanced or fully developed.

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in-depth British  

adjective

1. carefully worked out, detailed and thorough

   an in-depth study

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in depth Idioms  

1. Profoundly, thoroughly, as in It will take years to cover the entire subject in depth. [Mid-1900s]

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Etymology

Origin of in-depth

First recorded in 1960–65

Example Sentences

See Examples For:

in-depth in depth

But the revamp never lived up to a promise to deliver the same in-depth stories as the Sunday program and failed to draw new viewers.

From Los Angeles Times ● Sep. 3, 2026

“This book is not intended to act as a comprehensive account of the Pacific Theater, a sweeping tome of military strategy, or an in-depth study of squad-level tactics,” writes Scott Davis.

From The Wall Street Journal ● Aug. 27, 2026

"If this was anywhere else, it would have been closed down by now, or someone would have been in there looking in-depth at what is going on," she says.

From BBC ● Aug. 6, 2026

In this Money Talks: Felix Salmon sits down with Lee Buchheit for an in-depth chat on sovereign debt at a live event hosted by The Library of Mistakes.

From Slate ● Aug. 4, 2026

The show featured in-depth conversations with prominent figures in politics, science, and the arts.

From "Most Dangerous: Daniel Ellsberg and the Secret History of the Vietnam War" by Steve Sheinkin

In some locations, the deposited material may exceed 200 meters in depth.

From Science Daily ● Aug. 26, 2026

ANL had asked for more than £9.9 million as an interim payment ahead of future hearings to decide its legal costs in depth.

From BBC ● Aug. 21, 2026

The discovery of Masripithecus moghraensis suggests that important parts of ape evolutionary history may remain buried in regions that paleontologists have not yet explored in depth.

From Science Daily ● Jul. 24, 2026

Les Bleus were frustrated by Paraguay before finding a way to win – and I suspect Deschamps' side will have too much firepower for Spain, while their strength in depth from the bench is eye-watering.

From BBC ● Jul. 9, 2026

Believers, including the Posts, Capron, and Willets, discussed the spirits’ directive in depth.

From "American Spirits" by Barb Rosenstock

Related Words

• comprehensive
• detailed
• exhaustive
• extensive
• thorough