Where does “beirutí” come from?

beirutí (Spanish) comes from Spanish -í, from Sanskrit -ईय, from Proto-Indo-Iranian *-iHyas.

Ancestry of “beirutí”, step by step

StepLanguageWordMeaning
1Spanish-íSuffix indicating certain demonyms, especially...
2Sanskrit-ईयrelated to
3Proto-Indo-Iranian*-iHyas—
Every word from Proto-Indo-Iranian *-iHyas →Every word from Sanskrit -ईय →Every word from Spanish -í →