The Absolute Superlative: Some Irregular Forms

Some adjectives use irregular superlatives. In spoken language, people often avoid these forms by using molto, tanto, parecchio, or assai in place of a suffix added to the adjective. These forms are, however, good to know and important to keep in mind when reading and writing.

acre → acerrimo (only used figuratively) … bitter

L’acerrima battaglia durò più di tre anni senza un vero vincitore. The extremely bitter battle lasted more than three years without a true winner.

benefico → beneficentissimo … beneficent, philanthropic; healthy, helpful

Il nuovo programma di riciclaggio che stiamo lanciando sarà beneficentissimo per l'ambiente. The new recycling program we are launching will be extremely beneficial to the environment.