Where does “tuplarattaat” come from?

tuplarattaat (Finnish) comes from Finnish tupla, from Swedish dubbla — double down.

Ancestry of “tuplarattaat”, step by step

tuplarattaat traces back through two separate lines of ancestry.

via Finnish tupla

StepLanguageWordMeaning
1Finnishtupladouble
2Swedishdubbladouble down

via Finnish rattaat

StepLanguageWordMeaning
1FinnishrattaatNominative plural form of ratas; wagon, cart,...
Every word from Swedish dubbla