Where does “kos” come from?

kos (Tok Pisin) comes from English cause, from Middle English cause, from Old French cause, from Latin causa, from Old Latin caussa, from Proto-Indo-European kawd-teh₂.

kos (Tok Pisin): cost; cause

Definitions

cost; cause

Ancestry of “kos”, step by step

Step	Language	Word	Meaning
1	English	cause	The source of, or reason for, an event or action;...
2	Middle English	cause	cause
3	Old French	cause	cause
4	Latin	causa	cause, reason; case, claim, contention; motive,...
5	Old Latin	caussa	cause, reason, purpose; case, claim; Archaic form...
6	Proto-Indo-European	kawd-teh₂	—

Every word from Proto-Indo-European kawd-teh₂ →Every word from Old Latin caussa →Every word from Latin causa →