Where does “laboriosissimo” come from?

laboriosissimo (Italian) comes from Italian laborioso, from Latin laboriosus, from Latin lābor, from Old Latin labos, from Romanian labă, from Hungarian láb, from Proto-Uralic luwe, from Proto-Iranian *Hrawpācáh — fox.

Ancestry of “laboriosissimo”, step by step

StepLanguageWordMeaning
1Italianlaboriosohard-working, industrious; busy; laborious,...
2Latinlaboriosuslaborious, toilsome, demanding; industrious,...
3Latinlāborwork
4Old Latinlabos
5Romanianlabăpalm; paw
6Hungarianlábleg; foot; support, stand
7Proto-Uralicluwebone
8Proto-Iranian*Hrawpācáhfox
9Proto-Indo-Iranian*Hrawpāćásfox
Every word from Proto-Indo-Iranian *Hrawpāćás