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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

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Example Sentences

See Examples For:

in-depth in depth

He sees Watch Duty as valuable for people who want “social-media-like” frequent, in-depth updates on wildfires, and AwareCA as a tool for Californians directly affected by a disaster who need certainty that information is accurate.

From Los Angeles Times ● Oct. 30, 2026

There is often no need for in-depth personal credit checks when the collateral is secured by the lender.

From The Wall Street Journal ● Oct. 27, 2026

But she did say Niccol’s in-depth knowledge of Chipotle could benefit the chain during a tough time.

From MarketWatch ● Oct. 8, 2026

The lawyers' letter stated that the report was "the product of an in-depth journalistic investigations and is based on sources pertaining to an issue of paramount public importance".

From BBC ● Sep. 10, 2026

An awkwardness had sprung up after those few months, where before there would have been playful laughter and in-depth conversation and harmless bickering between us.

From "Where Things Come Back" by John Corey Whaley

Combine that bleak outcome with the advent of DVR and social media — where any event can be discussed in depth, immediately — and boom: Bye bye, watercooler.

From Salon ● Oct. 25, 2026

“Paralyzed by Hope” is born out of Bamford’s bipolar disorder and her OCD, and it explores her and her family’s mental health issues in depth.

From Los Angeles Times ● Oct. 20, 2026

He adds: “Cybersecurity is all about having defense in depth, so having multiple lines of protection if one thing fails.”

From The Wall Street Journal ● Oct. 9, 2026

Arsenal's strength in depth cannot be understated, but one area they may still look to strengthen in is the forward area.

From BBC ● Aug. 31, 2026

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

From "American Spirits" by Barb Rosenstock

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Related Words

• comprehensive
• detailed
• exhaustive
• extensive
• thorough

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