Hiraeth (pronounced [hiraɪ̯θ]) is a Welsh concept of longing for home, which can be loosely translated as 'nostalgia', or, more commonly, 'homesickness'.
Many Welsh people claim 'hiraeth' is a word which cannot be translated, meaning more than solely "missing something" or "missing home." To some, it implies the meaning of missing a time, an era, or a person. It is associated with the bittersweet memory of missing something or someone, while being grateful of that/ their existence. Similarly, the Cornish equivalent is ‘hireth’; Welsh and Cornish share common linguistic roots.
Hiraeth bears considerable similarities with the Portuguese concept of saudade (a key theme in Fado music), Galicianmorriña, Romaniandor, Gaeliccianalas, Russiantoska (тоска), GermanSehnsucht and Ethiopiantizita (ትዝታ).