Where does “underballast” come from?

underballast (English) comes from English ballast, from Middle English bar, from Old English bær, from Proto-West Germanic baʀ, from Proto-Germanic bazaz, from Proto-Indo-European bʰosós, from Proto-Indo-European bʰos- — to sally forth, barge, hurtle out; bare, barefoot.

underballast (English): To load with insufficient ballast

Definitions

  1. To load with insufficient ballast

Ancestry of “underballast”, step by step

underballast traces back through two separate lines of ancestry.

via English ballast

StepLanguageWordMeaning
1EnglishballastHeavy material that is placed in the hold of a...
2Middle EnglishbarAlternative form of bor
3Old Englishbærbare, naked, unconcealed
4Proto-West Germanicbaʀbare, naked
5Proto-Germanicbazazbare, naked
6Proto-Indo-Europeanbʰosósbare, barefoot
7Proto-Indo-Europeanbʰos-to sally forth, barge, hurtle out; bare, barefoot

via English under

StepLanguageWordMeaning
1EnglishunderIn or at a lower level than; As a subject of;...
2Middle Englishunderunder
3Old Englishunderunder, beneath
4Proto-Germanicunderamong, between; under, beneath; under
5Proto-Indo-Europeanh₁entérbetween
6Proto-Indo-Europeanh₁enin; in, inside
Every word from Proto-Indo-European bʰos-