Mysterious
10 lettersadjectivecommonUpdated February 2026
Definition
Difficult or impossible to understand, explain, or identify. Full of or characterised by mystery; arousing curiosity or speculation because of being unknown or secretive.
“The mysterious disappearance of the ancient artefact has puzzled archaeologists for years.”
Related Words
Word Game Tips
🟩
Wordle
10-letter adjective with -OUS ending; contains three S's and two Y's
🔤
Scrabble
Worth 15 points; the Y provides good scoring potential on premium squares
Explore Similar Words
Try These Tools
Dictionary References
Look up mysterious in an authoritative dictionary for full definitions, pronunciation, and etymology.
Ready to test your word skills?
Download Word Challenge and challenge yourself with our daily word puzzles. Guess the hidden word in six tries or fewer!