"Complete No Package". Designation used for collectible items that come with all the original accessories and parts, but none of the original packaging. Often seen on eBay and other online market places, and mostly used for items such as action figures (that often come with several small accessories that are easily lost).

CNP doesn't really say anything about the condition of an item, even though, for example, most CNP toys have been played with, so the term should be combined with some sort of grading or description of the item's condition. (And if it's not, you should probably avoid it since the item very well may have been played to pieces.)