"grandnephew" in German grandnephew Großneffe Detailed translations for "grandnephew" grandnephew grandnephew der Großneffe{masculine} Now, out there, my grandnephew Martin's house, Harriet's brother. Source: opensubtitles.org Corpus by OPUS Request review Da hinten lebt mein Großneffe Martin, Harriets Bruder. English synonyms for "grandnephew" grandnephew {n} great-nephew