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.
Hilland was working on a dead-end cold case that stretched back to the 70s involving a man, John Smith, whose two wives went mysteriously missing. Natasha Stoynoff, PEOPLE, 7 Sep. 2025 Intriguingly, if not mysteriously, the Solnhofen Limestones of southern Germany only hold young pterosaur fossils. Maria Mocerino, Interesting Engineering, 6 Sep. 2025 The glow mysteriously faded within seconds. Mark Price, Miami Herald, 2 Sep. 2025 Don’t miss Conan O’Brien and A$AP Rocky in rare dramatic roles, as well as Delaney Quinn as Byrne’s mysteriously ill daughter, who can be heard but never seen onscreen. Jack Smart, People.com, 31 Aug. 2025 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

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Cite this Entry

“Mysteriously.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/mysteriously. Accessed 12 Sep. 2025.

Last Updated: - Updated example sentences
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