Where does “optimisme” come from?

optimisme (Indonesian) comes from Dutch optimisme, from Dutch -isme, from Middle French -isme, 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.

optimisme (Indonesian): optimism

Definitions

optimism

Ancestry of “optimisme”, step by step

Step	Language	Word	Meaning
1	Dutch	optimisme	optimism
2	Dutch	-isme	-ism
3	Middle French	-isme	—
4	Latin	-isma	Alternative form of -ismus; -ism
5	Latin	-ismus	-ism
6	Ancient Greek	-ισμός	Forms abstract nouns
7	Ancient Greek	-μός	Forms abstract nouns
8	Proto-Indo-European	-mós	Creates action/result nouns from verb stems

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