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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

Published in May, the Johns Hopkins Agora Institute and ReD Associates conducted an in-depth research of conservatives in three red counties in Michigan, South Carolina and Wyoming.

From Salon ● Jul. 5, 2026

Assisted by AI, they could access the latest research to support accurate diagnosis and identify options that inform an in-depth conversation as they decide on the best treatment.

From MarketWatch ● Jun. 27, 2026

The 62-year-old - who signed a new deal with the national team until 2030 earlier this year - then gave a slightly more in-depth interview with a similar level of pessimism.

From BBC ● Jun. 25, 2026

Is the MOU’s broad interpretation done on purpose to leave flexibility for more in-depth negotiations?

From Barron's ● Jun. 25, 2026

In the days leading up to the charrette, Durham’s two white newspapers also featured several in-depth stories about the event, many of them focusing on the odd couple chairing it.

From "The Best of Enemies" by Osha Gray Davidson

“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

Instead, it was Arsenal's new-found strength in depth being praised as that creative spark finally came in stoppage time with substitutes Eze and Martinelli combining to draw the home side level.

From BBC ● May 19, 2026

Dr. Mehdi Boroujerdi, a pharmaceutical researcher and former professor, has conducted an in depth review of creatine in the Handbook of Creatine and Creatinine In Vivo Kinetics.

From Science Daily ● May 4, 2026

While the Ozu landmarks—“Late Spring,” “Early Summer,” “An Autumn Afternoon”—are examined in depth, so are such ’30s and ’40s efforts as “A Story of Floating Weeds” and “There Was a Father.”

From The Wall Street Journal ● Apr. 30, 2026

There, out of earshot of the contestants, top players were discussing and analyzing in depth every game, move by move, as it was played.

From "Endgame" by Frank Brady

Related Words

• comprehensive
• detailed
• exhaustive
• extensive
• thorough