ul·​tra·​se·​cret ˌəl-trə-ˈsē-krət How to pronounce ultrasecret (audio)
: extremely or extraordinarily secret, private, or confidential
ultrasecret information
an ultrasecret military operation

Word History

First Known Use

1874, in the meaning defined above

Time Traveler
The first known use of ultrasecret was in 1874

Dictionary Entries Near ultrasecret

Cite this Entry

“Ultrasecret.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ultrasecret. Accessed 4 Feb. 2023.

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