mysteriously

adverb

mys·​te·​ri·​ous·​ly mi-ˈstir-ē-əs-lē 

: 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

Kansas City Chiefs left tackle Josh Simmons is mysteriously absent from the team — again. — Bobby Burack Outkick, FOXNews.com, 28 Sep. 2026

Furniture mysteriously moving, lights flickering on or off and strange noises have all been reported. — Kaitlyn Keegan, Hartford Courant, 25 Sep. 2026

In this future timeline, Jim Kirk (Paul Wesley) is now the captain, Spock (Ethan Peck) is his first officer, Pike (Anson Mount) has been promoted to admiral, and La’an (Christina Chong) is mysteriously absent for … reasons. — Joe Otterson, Variety, 24 Sep. 2026

Nabutsilili, 45, said he was possessed by the rainmaking spirit as a 14-year-old boy when his legs mysteriously developed wounds. — Arkansas Online, 20 Sep. 2026

Word History

First Known Use

15th century, in the meaning defined above

Rhymes for mysteriously

• deliriously
• imperiously
• seriously