mysteriously

adverb

mys·​te·​ri·​ous·​ly mi-ˈstir-ē-əs-lē How to pronounce mysteriously (audio)
: in a mysterious manner : in a way that is difficult to explain or comprehend
documents that have mysteriously disappeared
smiling mysteriously
"I've got the key to my castle in the air, but whether I can unlock the door remains to be seen," observed Jo mysteriously.Louisa May Alcott

Examples of mysteriously in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Edgar Rice Burroughs’ A Princess of Mars (1912) tells the story of John Carter, a Civil War soldier mysteriously transported to a Mars inhabited by aliens who dwell along the desert world’s life-giving canals. Big Think, 19 Feb. 2026 It is understood, however, to focus on the relationship between a son and his mother, with the latter being mysteriously placed in a secure cage each night. Borys Kit, HollywoodReporter, 18 Feb. 2026 Yet mysteriously, there are not as many as scientists expect — and new research might explain why. Stefanie Waldek, Space.com, 16 Feb. 2026 In his arms, a baby Jesus with mysteriously mature eye bags flashes a peace sign. Hannah Towey, Condé Nast Traveler, 15 Feb. 2026 See All Example Sentences for mysteriously

Word History

First Known Use

15th century, in the meaning defined above

Time Traveler
The first known use of mysteriously was in the 15th century

Browse Nearby Words

Cite this Entry

“Mysteriously.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/mysteriously. Accessed 22 Feb. 2026.

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

More from Merriam-Webster