Where does “mutismo” come from?

mutismo (Italian) comes from Italian -ismo, from Latin -ismus, from Ancient Greek -ισμός, from Ancient Greek -μός, from Proto-Indo-European -mós — Creates action/result nouns from verb stems.

mutismo (Italian): muteness; mutism; stubborn or obstinate silence

Definitions

muteness; mutism; stubborn or obstinate silence

Ancestry of “mutismo”, step by step

Step	Language	Word	Meaning
1	Italian	-ismo	-ism
2	Latin	-ismus	-ism
3	Ancient Greek	-ισμός	Forms abstract nouns
4	Ancient Greek	-μός	Forms abstract nouns
5	Proto-Indo-European	-mós	Creates action/result nouns from verb stems

Every word from Proto-Indo-European -mós →Every word from Italian -ismo →Every word from Ancient Greek -μός →