Etymology in the sources
Source-reportedProto-Indo-European *ḱe? Proto-Indo-European *ḱóm Proto-Italic *kom Proto-Italic *kom- Proto-Indo-European *steh₂- Proto-Indo-European *-éh₁ti Proto-Indo-European *-yeti Proto-Indo-European *-éh₁yeti Proto-Indo-European *sth₂éh₁yeti Proto-Italic *staējō Proto-Italic *staēō Proto-Italic *komstaēō Latin cōnstō Proto-Indo-European *-onts Latin -ns Latin -ans Latin cōnstānsder. Latin Cōnstāns /Cōnstantius Proto-Indo-European *-nós Proto-Indo-European *-iHnos Proto-Italic *-īnos Latin -īnus Latin Constantīnus Patronymic from Cōnstāns /Cōnstantius + -īnus. Compare Valentīnus.
Sources for this account (3)
- Wiktionary: ConstantinusCC-BY-SA-4.0 · retrieved 2026-10-15
- Greek Wiktionary: ConstantinusCC-BY-SA-4.0 · retrieved 2026-10-15
- French Wiktionary: ConstantinusCC-BY-SA-4.0 · retrieved 2026-10-14
