misaˈddressedadj. (esp. of a letter) wrongly addressed.
ΚΠ
1892 R. L. StevensonVailima Lett. (1895) 163 Receiving misaddressed letters.
1988 DM News 15 Mar. 60 The dentist had failed to put the proper endorsement on the direct mail piece, so he wouldn't be getting those misaddressed stacks back.