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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

It’s a grim idea, that our hope is in a tool that discourages in-depth reading and a long-shot hypothetical strategy—both of which rely on technology known for sowing confusion.

From Slate ● Aug. 26, 2026

Few details from the ceremony have been shared publicly and Kelce's comments on Wednesday mark his first in-depth reflections he's shared since the couple were wed by comedic actor Adam Sandler.

From BBC ● Aug. 12, 2026

As we pull away from Dove Canyon, I take a moment to do a more in-depth assessment of my travel companions.

From "Dry" by Neal Shusterman and Jarrod Shusterman

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

From Science Daily ● Aug. 26, 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

“There was a columnist … who documented in depth the situation at MacArthur Park,” Bob wrote in reference to me.

From Los Angeles Times ● Jun. 6, 2026

That’s what happened in this case—but only because the team had enough messages to solve in depth.

From "The Woman All Spies Fear" by Amy Butler Greenfield

Related Words

• comprehensive
• detailed
• exhaustive
• extensive
• thorough