Where does “австралиец” come from?

австралиец (Bulgarian) comes from Bulgarian -и́ец, from Bulgarian -ия, from Latin -ia, from Latin -ius, from Proto-Italic -jōs, from Proto-Indo-European -yós — Creates adjectives from noun or verb stems.

Ancestry of “австралиец”, step by step

StepLanguageWordMeaning
1Bulgarian-и́ецsuffix appended to words to create a noun, usually denoting a male inhabitant's origin οf a place name
2Bulgarian-ия-ity, -ery, -ness; Forms feminine counterparts to...
3Latin-iaUsed to form a feminine abstract noun, usually...
4Latin-iusforming adjectives from nouns; nominative neuter...
5Proto-Italic-jōsForms comparative adjectives
6Proto-Indo-European-yósCreates adjectives from noun or verb stems
Every word from Proto-Indo-European -yósEvery word from Latin -iaEvery word from Latin -ius