The story
- Proto-Indo-European*sent-
- Proto-Italic*sentiō
- Latinsentiō
- Latinsentimentum
- Old Frenchsentement
- Englishsentiment
- Proto-Indo-European*h₂el-
- Proto-Indo-European*h₂élisder.?
- Englishsentimental
- English todaysentimentalism
From sentimental + -ism.
Etymology from Wiktionary, CC BY-SA 4.0.