E. Rossoni and P. Regati provide complementary information on the surname.

Rossoni suggests that it could derive, directly or as an abbreviated form, from an augmentative of the medieval Germanic name Achari (from ac, "sword edge", and hari, "army"). He considers it more likely, however, that it comes from the Hebrew name Acharon, meaning "the last one".

Regati identifies it as a surname widespread in the area of Imperia.