Mishandles is a 10 letter English word. It's valid Words with friends word worth 17 points.
You can make 941 anagrams from letters in mishandles (adehilmnss).
First recorded in 1490-1500; mis-1 + handle
A man hasn't many privileges in this country, but he might at least be allowed to mishandle his own rifle.
I hope they'll be all right careful of them pianos and not mishandle them so they'll get out of tune.
That misstep turned the narrative into how Romney would handle (or mishandle) a crisis, rather than keeping the focus on Obama.