lossful

adjective2

1. •
   Lossy; involving loss of information.

   • Thresholding and neighborhood definition are further lossful transformations which make details of the original application data virtually unrecoverable. — 2008
2. •
   (no longer used) Causing loss or damage; harmful.

   • Sing on, thou virgin soul, whose lossful gain / Thy love-sick parents have bewail'd in vain... — 1611