*Amisī

Probably ultimately from an old Indo-European hydronym, though it is uncertain whether the name was inherited directly within Germanic or transmitted from an earlier Indo-European hydronymic stratum. Late Proto-Germanic *Amisī ~ *Amiz(i)jōz is reconstructed from early Proto-Germanic *Amísī ~*Amis(i)jṓs < Proto-Indo-European *h₂emH-é/ís-ih₂ ~ *h₂emH-é/ís-i̯éh₂-s, ultimately based on PIE root *h₂emH-(Bichlmeier 2014: 26–28; Blažek 2024: 60–62; Rix et al. 2001: s.v. *h₂emH-). Probable cognates or related formations include Albanian amë, Ancient Greek ἀμάρη (amárē), Hittite 𒀀𒈪𒅀𒊏 (a-mi-ya-ra /amiyara/) , and Old Irish ind-aim/adh-aim, with possible further relatives Vedic Sanskrit अमत्र (ámatra-), Armenian աման (aman), and Ancient Greek ἄμη (ámē) (Watkins 1959: 18–20). The ancient forms Amasias, Amissis, Amisia, and Amisios, together with medieval Emisa and Old Saxon Emese, support the reconstruction, while several other related hydronyms in Germany and France point to a wider ancient European hydronymic family (Blažek 2024: 60–62).