Not feeling or showing surprise at something unexpected:he replied in a flat and unsurprised voice...
When I got back to my room I was somewhat surprised and somewhat unsurprised to see that Sam wasn't there.
I was both surprised and unsurprised at his remark.
Seeing all the episodes on DVD, I am not surprised by my fair weather watching, but equally unsurprised that it inspired a cult fanbase to lament its demise.