The word "unusual" means something that is not common, abnormal or out of the ordinary. It describes an event or a thing that stands out from what is commonly seen or experienced.
Usage examples
The painting in the art gallery was quite unusual, with bold and vibrant colors that caught everyone's attention.
During the hiking trip, we spotted an unusual species of bird that we had never seen before.
She had an unusual talent for memorizing long lists of numbers and could recall them effortlessly.
The hotel we stayed in had an unusual architectural design, featuring a spiral staircase that seemed to defy gravity.
At the fashion show, the designer presented a collection of unusual and avant-garde clothing that pushed the boundaries of conventional fashion.
It's not unusual for something to do double duty. (ftc.gov)
It is a condition for the later event, although the later event does not figure in its own constitution except in unusual cases of conscious anticipation. (religion-online.org)
They are packed with unusual features for all of you adventure seekers out there. (2hottravellers.com)