- The definition of unusual is something rare or out of the ordinary.
When an artist creates artwork unlike anything ever seen before, this is an example of a time when the art might be described as unusual.
unusual definition by Webster's New World
not usual or common; rare; exceptional
unusual definition by American Heritage Dictionary
Not usual, common, or ordinary.
- un·uˈsu·al·ly adverb
- un·uˈsu·al·ness noun