Pyrrhic

adjective2

1. •
   Of or relating to Pyrrhus (319/318–272 BCE), Greek general and statesman.

   • The Pyrrhic army lost the Pyrrhic war.
2. •
   Achieved at too great a cost or detriment to have been worthwhile (as a victory, accomplishment, etc).

   • Although this syndrome is thought to resemble patterns of Pyrrhic revenge […] — 1993