The story
- Proto-Indo-European*úp
- Proto-Indo-European*upér
- Proto-Italic*super
- Latinsuper
- Latinsuper-
- Proto-Indo-European*ḱel-
- Proto-Indo-European*ḱelyom
- Proto-Italic*keljom
- Latincilium
- Latinsupercilium
- English todaysupercilium
Borrowed from Latin supercilium (“eyebrow; brow, ridge; pride, arrogance”).
Etymology from Wiktionary, CC BY-SA 4.0.