Where does “supportérisme” come from?

supportérisme (French) comes from French -ïsme, from Latin -isma, from Latin -ismus, from Ancient Greek -ισμός, from Ancient Greek -μός, from Proto-Indo-European -mós — Creates action/result nouns from verb stems.

supportérisme (French): The behaviour of supporters of a team, especially...

Definitions

The behaviour of supporters of a team, especially...

Ancestry of “supportérisme”, step by step

Step	Language	Word	Meaning
1	French	-ïsme	-ism, variant of -isme following vowels
2	Latin	-isma	Alternative form of -ismus; -ism
3	Latin	-ismus	-ism
4	Ancient Greek	-ισμός	Forms abstract nouns
5	Ancient Greek	-μός	Forms abstract nouns
6	Proto-Indo-European	-mós	Creates action/result nouns from verb stems

Every word from Proto-Indo-European -mós →Every word from French -ïsme →Every word from Ancient Greek -μός →