"Unsharpened" means that something, usually a tool like a pencil or a knife, doesn't have a sharp or fine edge. It may not be able to cut or write easily without being sharpened first. Full definition
Rarely does a period go by for the Royal 7's at Bennet Middle School without a small forest of unsharpened pencils rising in the air at the beginning of the period and marching to the sharpener, several students seeking to borrow a pen or pencil, and one or two asking to go to the bathroom or to the nurse. (educationworld.com)
With the flat, unsharpened side of the knife, scrape the seeds as much as possible from the split - open vanilla bean. (atreatsaffair.com)
I also realized that it would have been better to use a green unsharpened pencil or green craft stick and then wrap the pipe cleaner around it for more durability. (funlearningforkids.com)