Desolate  —adj. 1 left alone; solitary. 2 uninhabited, ruined, dreary (desolate moor). 3 forlorn; wretched. —v. (-ting) 1 depopulate, devastate; lay waste. 2 (esp. As desolated adj.) Make wretched.  desolately adv. Desolateness n. [latin solus alone]