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

The story revolves around a town where the inhabitants have been mysteriously disappearing and rumours abound that there are ghosts under the lake eating human heads and leaving the rotting corpses floating on the water’s surface. —Liz Shackleton, Deadline, 16 Mar. 2025

On the latest episode of Rolling Stone’s Song Shuffle, the musician finds inspiration in everything from FKA Twigs to cattle farms where livestock mysteriously turn up dead. —Larisha Paul, Rolling Stone, 14 Mar. 2025

But rather than waking up to marbles scattered all over your floor or a mysteriously green dog, why not channel that mischievous energy into a family-friendly April Fool’s Day movie marathon? —Kara Nesvig, Parents, 12 Mar. 2025

The causes of deaths of actor Gene Hackman and his wife, Betsy Arakawa, were revealed by officials on Friday, more than one week after the couple was mysteriously found dead in their Santa Fe, New Mexico, home. —Emily Shapiro, ABC News, 7 Mar. 2025

Word History

First Known Use

15th century, in the meaning defined above

Rhymes for mysteriously

• deliriously
• imperiously
• seriously