若じゃっ朽きゅうMeanings1nounyoung but unambitious; young yet lacking spiritobsolete termObsolete term describing a young person who lacks drive or ambition. Contrasts with 老朽 (old and worn out).See also: 老朽「若じゃっ朽きゅう」は、若わかいのに意い欲よくのない人ひとを指さす古ふるい言こと葉ばだ。若朽 is an old word for a young person who lacks ambition.