-otto

Perhaps a variant of -etto, or from Vulgar Latin *-ottum.

• IPA^(key): /ˈɔt.to/
• Rhymes: -ɔtto
• Hyphenation: -òt‧to

-otto m (noun-forming suffix, plural -otti, feminine -otta)
-otto (adjective-forming suffix, feminine -otta, masculine plural -otti, feminine plural -otte)

1. suffix used to form diminutives, especially with an endearing connotation

   ‎giovane + ‎-otto → ‎giovanotto (“young man”)

2. suffix used to form pejoratives

   Synonym: -accio

   ‎contadino (“farmer”) + ‎-otto → ‎contadinotto (“peasant”)

3. used to form demonyms and demonymic adjectives

   ‎Rovigo + ‎-otto → ‎rovigotto (“(adjective) of or pertaining to Rovigo;(noun) inhabitant of Rovigo”)

• The diminutive and pejorative senses of the suffix sometimes overlap.

• -otto in Treccani.it – Vocabolario Treccani on line, Istituto dell'Enciclopedia Italiana

• Totò, totò