Where does “undownload” come from?

undownload (English) comes from English download, from English down-, from Middle English down-, from Old English dūne-, from Old English dūne, from Old English adūne, from Old English ofdūne, from Old English dūn — smoke; mist, haze.

undownload (English): To remove (something previously downloaded) from the device to which it was downloaded

Definitions

  1. To remove (something previously downloaded) from the device to which it was downloaded

Ancestry of “undownload”, step by step

undownload traces back through two separate lines of ancestry.

via English download

StepLanguageWordMeaning
1EnglishdownloadA file transfer to the local computer; A file...
2Englishdown-decrease; lower position or direction, literally...
3Middle Englishdown-
4Old Englishdūne-down-
5Old Englishdūnehill; down, downward
6Old Englishadūne
7Old Englishofdūneoff the hill; down
8Old Englishdūnhill, down; hill, dune; hill, mountain
9Proto-Germanic*dūnā
10Proto-Celticdūnomstronghold, rampart
11Proto-Indo-Europeandʰewh₂-smoke; mist, haze

via English un

StepLanguageWordMeaning
1EnglishunOne
Every word from Proto-Indo-European dʰewh₂-Every word from Proto-Celtic dūnomEvery word from Proto-Germanic *dūnā
undownload — Etymology, Origin & Word History | Etymology Explorer