Where does “адвокатин” come from?

адвокатин (Bulgarian) comes from Bulgarian -ин, from Old Church Slavonic -инъ.

Ancestry of “адвокатин”, step by step

StepLanguageWordMeaning
1Bulgarian-инine, 's
2Old Church Slavonic-инъ—
Every word from Old Church Slavonic -инъ →Every word from Bulgarian -ин →