Where does “आँचलिक” come from?

आँचलिक (Hindi) comes from Hindi -इक, from Sanskrit -इक, from Lithuanian -ikas, from Proto-Indo-European -iḱos — -y, -ic.

Ancestry of “आँचलिक”, step by step

StepLanguageWordMeaning
1Hindi-इकforms adjectives from nouns
2Sanskrit-इकadjectival suffix; doer
3Lithuanian-ikas—
4Proto-Indo-European-iḱos-y, -ic
Every word from Proto-Indo-European -iḱos →Every word from Sanskrit -इक →Every word from Lithuanian -ikas →