ul·​tra·​fas·​tid·​i·​ous ˌəl-trə-fa-ˈsti-dē-əs How to pronounce ultrafastidious (audio)
: extremely or extraordinarily fastidious (as in attention to neatness or detail)
an ultrafastidious worker/dresser/housekeeper
… an ultrafastidious reconstruction of the 1969 show …Holland Cotter

Word History

First Known Use

1847, in the meaning defined above

Time Traveler
The first known use of ultrafastidious was in 1847

Dictionary Entries Near ultrafastidious

Cite this Entry

“Ultrafastidious.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ultrafastidious. Accessed 5 Dec. 2023.

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