Keywords: loneliness, alone, lonely
As a Noun
1. The unhappiness people often feel when they are alone and without friends or family. English = loneliness.
As a Verb or Adjective
1. To be without other people; to be unhappy because you are without other people or without friends. English = (be) alone; (be) lonely, (be) all alone, (be) by oneself.
1. Used immediately next to a verb sign to mean the action was performed by one person alone, without any help or companionship. English = all alone, by oneself.