laboriosissimo

Italian

Etymology

From laborioso +‎ -issimo.

Adjective

laboriosissimo (feminine laboriosissima, masculine plural laboriosissimi, feminine plural laboriosissime)

1. superlative degree of laborioso
   1. very laborious
   2. very industrious or hard-working

Latin

Adjective

labōriōsissimō

1. dative/ablative masculine/neuter singular of labōriōsissimus