Where does “ammattisalaisuus” come from?

ammattisalaisuus (Finnish) comes from Finnish ammatti, from Middle Low German ambacht, from Old Saxon ambaht, from Proto-Germanic ambahtaz, from Gaulish ambaxtos, from Proto-Celtic ambaxtos, from Proto-Indo-European h₂eǵ- — to drive.

ammattisalaisuus (Finnish): professional secret

Definitions

professional secret

Ancestry of “ammattisalaisuus”, step by step

ammattisalaisuus traces back through two separate lines of ancestry.

via Finnish ammatti

Step	Language	Word	Meaning
1	Finnish	ammatti	profession, vocation, occupation; professional,...
2	Middle Low German	ambacht	—
3	Old Saxon	ambaht	service
4	Proto-Germanic	ambahtaz	servant
5	Gaulish	ambaxtos	vassal, high-ranking servant
6	Proto-Celtic	ambaxtos	servant
7	Proto-Indo-European	h₂eǵ-	to drive

via Finnish salaisuus

Step	Language	Word	Meaning
1	Finnish	salaisuus	secret
2	Finnish	salainen	secret, clandestine; arcane
3	Finnish	sala	A secret
4	Proto-Finno-Ugric	*sala	—
5	Proto-Uralic	śala	elm

Every word from Proto-Indo-European h₂eǵ- →Every word from Proto-Celtic ambaxtos →Every word from Gaulish ambaxtos →