Where does “häkäkaasu” come from?

häkäkaasu (Finnish) comes from Finnish häkä, from Swedish haka, from Swedish a, from Swedish avlopp, from Swedish lopp, from Swedish löpa, from Old Swedish løpa, from Old Norse hlaupa.

Ancestry of “häkäkaasu”, step by step

häkäkaasu traces back through two separate lines of ancestry.

via Finnish häkä

StepLanguageWordMeaning
1Finnishhäkäcarbon monoxide
2Swedishhakachin, lower part of face
3Swedishafrom
4Swedishavloppa drain; sewage
5Swedishloppa race (running competition or (in an extended sense) other speed competition, like in English)
6Swedishlöpato run along, stretch; to run, to move quickly...
7Old Swedishløpato run
8Old Norsehlaupato leap, jump, spring
9Proto-Germanichlaupanąto jump forward, to leap
10Proto-Indo-Europeanklaup-

via Finnish kaasu

StepLanguageWordMeaning
1Finnishkaasugas; gas pedal; "olla kaasussa": to be drunk
2Proto-Uralickäsädew
Every word from Proto-Indo-European klaup-Every word from Proto-Germanic hlaupanąEvery word from Old Norse hlaupa
häkäkaasu — Etymology, Origin & Word History | Etymology Explorer