a·tro·cious 
(ə-trōshəs)
(ə-trōshəs)adj.
1. Extremely evil or cruel; monstrous: an atrocious crime.
2. Exceptionally bad; abominable: atrocious decor; atrocious behavior.
[From Latin atrōx, atrōc-, frightful, cruel; see āter- in the Appendix of Indo-European roots.]
a·trocious·ly adv.
a·trocious·ness n.