hanged

Etymology

verb

1. (law) simple past and past participle of hang (now only when referring to the method of execution)
   The Londoners seeing that they could get no vantage against the duke, who was without their reach, to bewreak their anger they took his arms, which in most despiteful wise they hanged up in the open places of the city in sign of reproach, as for a traitor; […] 1841, John Foxe, The History of John Wickliffe, page 21

adj

1. (informal, euphemistic) damned (as an intensifier or vehement denial)
   I'm hanged if I know how to get the idea through his thick skull!