Where does “istekli” come from?

istekli (Turkish) comes from Turkish -li, from Ottoman Turkish ـلو, from Proto-Turkic *-lig — A positive adjective suffix.

istekli (Turkish): keen

Definitions

  1. keen

Ancestry of “istekli”, step by step

StepLanguageWordMeaning
1Turkish-liwith, containing;. This usage is treated as a "case suffix" and is separated from proper nouns by an apostrophe
2Ottoman TurkishـلوForms adjectives from nouns; with
3Proto-Turkic*-ligA positive adjective suffix
Every word from Proto-Turkic *-lig →Every word from Turkish -li →Every word from Ottoman Turkish ـلو →