Where does “tschüssi” come from?

tschüssi (German) comes from German -ī, from Hindi -ई, from Prakrit -𑀇𑀅, from Sanskrit -इक, from Lithuanian -ikas, from Proto-Indo-European -iḱos — -y, -ic.

Ancestry of “tschüssi”, step by step

StepLanguageWordMeaning
1German-īForms pet names from given names, kinship terms
2Hindi-ईrelating to, forms adjectives from nouns; doer,...
3Prakrit-𑀇𑀅ed
4Sanskrit-इकadjectival suffix; doer
5Lithuanian-ikas—
6Proto-Indo-European-iḱos-y, -ic
Every word from Proto-Indo-European -iḱos →Every word from Sanskrit -इक →Every word from Hindi -ई →