Where does “Konstantinopel” come from?

Konstantinopel (German) comes from Latin Constantinopolis, from Koine Greek Κωνστᾰντῑνούπολῐς, from Ancient Greek Κωνστᾰντῖνος, from Latin Constantinus, from Latin -īnus, from Proto-Italic -īnos, from Proto-Indo-European -iHnos, from Proto-Indo-European -no- — adjectival suffix.

Ancestry of “Konstantinopel”, step by step

StepLanguageWordMeaning
1LatinConstantinopolis
2Koine GreekΚωνστᾰντῑνούπολῐςConstantinople
3Ancient GreekΚωνστᾰντῖνοςof Constantine; Constantine's
4LatinConstantinus
5Latin-īnusof or pertaining to; -ine
6Proto-Italic-īnosof/belonging to
7Proto-Indo-European-iHnosCreates adjectives of materials
8Proto-Indo-European-no-adjectival suffix
Every word from Proto-Indo-European -no-