The story
- Proto-Indo-European*mey-
- Proto-Indo-European*ḱom-moy-ni-s
- Proto-Italic*kommoinis
- Old Latincomoinis
- Latincommūnis
- Old Frenchcomun
- Frenchcommun
- Frenchcommunisme
- English todaycommunism
A borrowing from French communisme, which was formed from commun (“common”) (from Latin commūnis) and the suffix -isme (“-ism”). By surface analysis, commune + -ism.
Words from the same roots
Etymology from Wiktionary, CC BY-SA 4.0.