LONG-LOST Meaning of LONG-LOST in English adj.Long-lost is used with these nouns: ↑ brother , ↑ cousin , ↑ daughter , ↑ father , ↑ friend , ↑ relative , ↑ sister , ↑ son , ↑ twin Oxford Collocations English Dictionary. Оксфордский английский словарь словосочетаний . 2012