Where does “big-boob” come from?

big-boob (English) comes from English boob, from English booby, from English bubby, from English brother, from Middle English brother, from Old English brōþor, from Proto-West Germanic brōþer, from Proto-Germanic brōþēr — brother.

big-boob (English): Having large breasts, busty

Definitions

  1. Having large breasts, busty

Ancestry of “big-boob”, step by step

big-boob traces back through two separate lines of ancestry.

via English boob

StepLanguageWordMeaning
1EnglishboobIdiot, fool; Idiotic, foolish; To behave...
2EnglishboobyA stupid person; Any of various large tropical...
3EnglishbubbyA woman's breast; bub; bubba; Alternative...
4EnglishbrotherSon of the same parents as another person; A male...
5Middle EnglishbrotherA brother or brother-in-law; a male sibling
6Old Englishbrōþorbrother
7Proto-West Germanicbrōþerbrother
8Proto-Germanicbrōþērbrother
9Proto-Indo-Europeanbʰréh₂tērbrother

via English big

StepLanguageWordMeaning
1EnglishbigOf great size, large; Thought to have undue...
2Middle Englishbig—
3Proto-Germanicbugja-swollen up, thick
4Proto-Indo-Europeanbʰew-to grow, swell; to swell, wax, grow; to blow; to...
Every word from Proto-Indo-European bʰréh₂tēr →Every word from Proto-Germanic brōþēr →Every word from Proto-West Germanic brōþer →