Where does “unbillable” come from?

unbillable (English) comes from English billable, from English Bill, from Middle English bill, from Old English bil, from Frankish billi, from Proto-Germanic bilją, from Proto-Germanic harjaz, from Proto-Indo-European kóryos — army.

unbillable (English): Not billable

Definitions

  1. Not billable

Ancestry of “unbillable”, step by step

unbillable traces back through two separate lines of ancestry.

via English billable

StepLanguageWordMeaning
1EnglishbillableCapable of being billed for; Something that is...
2EnglishBillA nickname for the British constabulary. Often called "The Bill" or "Old Bill"
3Middle Englishbill
4Old Englishbila kind of sword or other bladed weapon,...
5Frankishbilli
6Proto-Germanicbiljąa cutting implement; blade; axe; sword; spike;...
7Proto-Germanicharjazarmy; army leader; commander; warrior
8Proto-Indo-Europeankóryoswar; troops; army; war, troops
9Proto-Indo-Europeanḱer-to grow, to make grow, to nourish; to plait,...
10Proto-Indo-Europeankr̥-to turn, to bend
11Proto-Indo-Europeanker-army

via English un

StepLanguageWordMeaning
1EnglishunOne
Every word from Proto-Indo-European ker-Every word from Proto-Indo-European kr̥-Every word from Proto-Indo-European ḱer-
unbillable — Etymology, Origin & Word History | Etymology Explorer