The definition of mysterious is something that is not understood or known.adjective
An example of something mysterious is an old man who lives in a house and never comes outside.YourDictionary definition and usage example. Copyright © 2013 by LoveToKnow Corp.
Origin: < L mysterium (see mystery) + -ous
Used by arrangement with John Wiley & Sons, Inc.
- Of, relating to, or being a mystery: mysterious and infinite truths.
- Simultaneously arousing wonder and inquisitiveness, and eluding explanation or comprehension: a mysterious visitor; mysterious conduct.
Origin: French mystérieux, from mystère, secret, from Latin mystērium; see mystery1.
- mys·teˈri·ous·ly adverb
- mys·teˈri·ous·ness noun