desolation (n.)
late 14c., "action of laying waste," also "sorrow, grief," from Old French desolacion (12c.) "desolation, devastation, hopelessness, despair," from Church Latin desolationem (nominative desolatio), noun of action from past participle stem of desolare (see desolate (adj.)). Meaning "condition of being ruined or wasted" is from early 15c.