Definition of alone

• without any others being included or involved; "was entirely to blame"; "a school devoted entirely to the needs of problem children"; "he works for Mr. Smith exclusively"; "did it solely for money"; "the burden of proof rests on the prosecution alone"; "a privilege granted only to him"
• without anybody else; "the child stayed home alone"; "he flew solo"
• isolated from others; "could be alone in a crowded room"; "was alone with her thoughts"; "I want to be alone"