atrocity

noun3

1. •
   An extremely cruel act; a horrid act of injustice.

   • The regime is guilty of mass atrocities including forced displacement and the use of chemical weapons.
2. •
   The quality or state of being atrocious; enormous wickedness; extreme criminality or cruelty.

   • an apology devised after the commission of the deed, to cover up its atrocity — 1843
3. •
   An object considered to be extremely unattractive or undesirable.

   • [S]ome of the printers were good singers and others good performers on the guitar and on that atrocity the accordeon—[…] — 1870