Where does “outdoors” come from?

outdoors (English) comes from English out, from Middle English oute, from Old English ūt, from Proto-West Germanic *ūt, from Proto-Germanic ūt, from Proto-Indo-European úd — out, outward.

outdoors (English): Not inside a house or under covered structure;...

Definitions

  1. Not inside a house or under covered structure;...

Ancestry of “outdoors”, step by step

outdoors traces back through two separate lines of ancestry.

via English out

StepLanguageWordMeaning
1EnglishoutAway from the inside, centre or other point of...
2Middle Englishouteout
3Old Englishūtout
4Proto-West Germanic*ūtout, outward
5Proto-Germanicūtout, outward
6Proto-Indo-Europeanúdout, outward

via English door

StepLanguageWordMeaning
1EnglishdoorA portal of entry into a building, room, or...
2Middle EnglishdoreA door or gate structure barring an entrance
3Old Englishdorabumblebee
4Proto-Germanicdurôbumblebee, humming insect
5Proto-Indo-Europeandʰer-to support; to hold

Words derived from “outdoors

Every word from Proto-Indo-European údEvery word from Proto-Germanic ūtEvery word from Proto-West Germanic *ūt