Jump To:

• 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.

---

in-depth British  

adjective

1. carefully worked out, detailed and thorough

   an in-depth study

---

in depth Idioms  

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

---

Etymology

Origin of in-depth

First recorded in 1960–65

Example Sentences

Siri AI functions similarly to other AI chatbots by providing in-depth answers to user questions.

From Barron's • Jun. 9, 2026

But veteran TV executives say that loyal “60 Minutes” viewers still expect to see seasoned correspondents delivering in-depth investigations and analysis.

From Los Angeles Times • Jun. 4, 2026

"Roman won't analyze atmospheres in the same in-depth way as missions like NASA's James Webb Space Telescope, but it will gather different information on a much larger scale," Wilson said.

From Science Daily • Jun. 1, 2026

In his essay of more than 5,600 words - his first in-depth critique of Sir Keir's government - Sir Tony argued the "principal problem" was not "Keir's personality" or "a failure to communicate 'our achievements'".

From BBC • May 28, 2026

“Because I don’t want to! Do I have provide you with an in-depth analysis of every decision I make?”

From "Looking for Alaska" by John Green

Related Words

• comprehensive
• detailed
• exhaustive
• extensive
• thorough