Where does “builddown” come from?

builddown (English) comes from English build, from Middle English bylden, from Old English bytlan, from Old English -a, from Proto-Germanic -ō, from Proto-Germanic -ô, from Proto-Indo-European -ō — Derives nouns from roots.

builddown (English): A systematic, gradual reduction in the number of...

Definitions

  1. A systematic, gradual reduction in the number of...

Ancestry of “builddown”, step by step

builddown traces back through two separate lines of ancestry.

via English build

StepLanguageWordMeaning
1EnglishbuildTo form by combining materials or parts; To...
2Middle EnglishbyldenTo lodge: to stay or reside
3Old Englishbytlanto build
4Old English-aEnding forming adverbs; nominative masculine...
5Proto-GermanicCreates feminine nouns from roots and stems
6Proto-Germanic-ly; Forms agent nouns, often from the zero-grade...
7Proto-Indo-EuropeanDerives nouns from roots

via English Down

StepLanguageWordMeaning
1EnglishDownusually known as County Down
2Middle Englishdoundown
3Old Englishdūnhill, down; hill, dune; hill, mountain
4Proto-Germanic*dūnā
5Proto-Celticdūnomstronghold, rampart
6Proto-Indo-Europeandʰewh₂-smoke; mist, haze
Every word from Proto-Indo-European Every word from Proto-Germanic Every word from Old English -a
builddown — Etymology, Origin & Word History | Etymology Explorer