Where does “Bunkerbrecher” come from?

Bunkerbrecher (German) comes from German Brecher, from German -er, from Old High German -āri, from Proto-West Germanic -ārī, from Proto-Germanic -ārijaz, from Latin -ārius, from Proto-Italic *-āzios — Forms relational adjectives to nouns (and rarely numerals).

Ancestry of “Bunkerbrecher”, step by step

Bunkerbrecher traces back through two separate lines of ancestry.

via German Brecher

StepLanguageWordMeaning
1GermanBrecherbreaker
2German-erForms agent nouns etc. from verbs, suffixed to...
3Old High German-āriused to form agent nouns
4Proto-West Germanic-ārī-er
5Proto-Germanic-ārijaz-er
6Latin-āriuser
7Proto-Italic*-āziosForms relational adjectives to nouns (and rarely numerals)

via German Bunker

StepLanguageWordMeaning
1GermanBunkerbunker hardened shelter
2EnglishBunkerA hardened shelter, often partly buried or fully underground, designed to protect the inhabitants from falling bombs or other attacks
3EnglishbunkOne of a series of berths or beds placed in...
4EnglishbunkumSenseless talk; nonsense; a piece of nonsense;...
5EnglishbuncombeAlternative spelling of bunkum
6EnglishBuncombe County
Every word from Proto-Italic *-āzios
Bunkerbrecher — Etymology, Origin & Word History | Etymology Explorer