Definition of inner sanctum
somewhat formal
: a very private room or place
The new initiate was admitted to the club's inner sanctum.
—often used figuratively the inner sanctum of the CIA
Learn More About inner sanctum
Statistics for inner sanctum
Look-up Popularity
Cite this Entry
“Inner sanctum.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/inner%20sanctum. Accessed 29 Sep. 2022.
Style: MLA
MLA
Chicago
APA
Merriam-Webster
Chicago
APA
Merriam-Webster
Test Your Vocabulary
Odd Habits and Quirks
-
- Which of the following best describes an easily irritated person?
Test your knowledge - and maybe learn something along the way.
TAKE THE QUIZ
A daily challenge for crossword fanatics.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridged
Words at Play
Ask the Editors
Word Games
-
Favorite New Words in the Dictionary
Level up your vocabulary with these newly added w...
Take the quiz
-
Name That Thing Mega Quiz!
Test your visual vocabulary!
Take the quiz
-
True or False?
Test your knowledge - and maybe learn something a...
Take the quiz
-
Spelling Bee Quiz
Can you outdo past winners of the National Spelli...
Take the quiz
Share inner sanctum