part of speech: adjective
inflections: lonelier, loneliest
definition 1: without company; alone.
- There was a lonely hill on the horizon.
- She is content with her lonely life.
synonyms: alone, lone, solitary
definition 2: empty of humans; deserted; lonesome.
- He walked for miles through lonely woods.
synonyms: desolate, lonesome
definition 3: unhappy because alone; lonesome.
- I felt lonely for my family while I was away at camp.
derivation: loneliness (n.)