A longing for home that no longer exists or never was. A nostalgia and grief for the lost places of your past, or a romanticized past.

Vladimir Nabokov described it as 'a longing with nothing to long for, a sick pining, a vague restlessness.' It can range from mild longing to a deep ache of the soul.

A melancholic nostalgia for something you love that is gone, or may never have existed. Often used to describe the feeling of missing a homeland, a person, or a past moment.