Where does “under-sergeant” come from?

under-sergeant (English) comes from English sergeant, from Russian сержант, from Polish sierżant, from French sergent, from Middle French sergent, from Old French serjant, from Medieval Latin serviens, from Latin serviēns — to flow; to guard; to bind, to tie together.

under-sergeant (English): A non-commissioned officer army rank immediately...

Definitions

  1. A non-commissioned officer army rank immediately...

Ancestry of “under-sergeant”, step by step

under-sergeant traces back through two separate lines of ancestry.

via English sergeant

StepLanguageWordMeaning
1EnglishsergeantUK army rank with NATO code OR-6, senior to...
2Russianсержантsergeant
3Polishsierżantsergeant
4Frenchsergentsergeant
5Middle Frenchsergent
6Old Frenchserjanta military rank, roughly equivalent to sergeant
7Medieval Latinserviensa servant, vassal, soldier, apparitor; serving;...
8Latinserviēnsserving, (as a servant or slave)
9Latinserviōto be a slave to; to serve
10Latinservusa servant; a serf; a slave
11Proto-Italicserwosguardian
12Proto-Indo-Europeanser-wo-sguardian
13Proto-Indo-Europeanser-to flow; to guard; to bind, to tie together

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 ser-Every word from Proto-Indo-European ser-wo-sEvery word from Proto-Italic serwos