From Latin -īvimus (via -īvmus).[1]
Example: Italian finimmo, from Latin finivimus.
-immo (non-lemma form of verb-forming suffix)
- used with a stem to form the first-person plural past historic of regular -ire verbs
- ^ Patota, Giuseppe (2002) Lineamenti di grammatica storica dell'italiano (in Italian), Bologna: il Mulino, →ISBN, page 146