Where does “sub-post office” come from?

sub-post office (English) comes from English sub, from English substitute, from Middle English substituten, from Latin substitutus, from Latin substituo, from Latin statuo, from Latin stātus, from Latin stō.

sub-post office (English): A post office run by a self-employed subpostmaster on behalf of the central post office

Definitions

  1. A post office run by a self-employed subpostmaster on behalf of the central post office

Ancestry of “sub-post office”, step by step

sub-post office traces back through two separate lines of ancestry.

via English sub

StepLanguageWordMeaning
1EnglishsubA submarine; A submarine sandwich: a sandwich...
2EnglishsubstituteTo use in place of something else, with the same...
3Middle Englishsubstituten
4Latinsubstitutussubstituted
5LatinsubstituoI place next to, under, or instead of; I...
6LatinstatuoI set up, station; I establish, determine, fix; I...
7Latinstātusfixed, set, having been set
8Latinstōto stand
9Proto-Italicstaēōstand
10Proto-Indo-Europeansth₂éh₁yetito stand
11Proto-Indo-European*steh₂-

via English post office

StepLanguageWordMeaning
1Englishpost officeA place concerned with the business of...
Every word from Proto-Indo-European *steh₂-Every word from Proto-Indo-European sth₂éh₁yetiEvery word from Proto-Italic staēō
sub-post office — Etymology, Origin & Word History | Etymology Explorer