Where does “invalidikäymälä” come from?

invalidikäymälä (Finnish) comes from Finnish invalidi, from English invalid, from English in-, from Middle English in-, from Old English in-, from Old English in, from Proto-West Germanic *in, from Proto-Germanic in — in.

Ancestry of “invalidikäymälä”, step by step

invalidikäymälä traces back through two separate lines of ancestry.

via Finnish invalidi

StepLanguageWordMeaning
1FinnishinvalidiA person with a disability or a handicap; not...
2EnglishinvalidNot valid; not true, correct, acceptable or...
3Englishin-in, into, towards, within; in, into; Used with...
4Middle Englishin-
5Old Englishin-in, into; on, upon; internal, positioned on the...
6Old Englishinin; Alternative form of inn
7Proto-West Germanic*in
8Proto-Germanicinin; into
9Proto-Indo-Europeanénin

via Finnish käymälä

StepLanguageWordMeaning
1Finnishkäymälälavatory, toilet
2Finnishkäydäto visit, go to (and return), attend (a place)
3Proto-Finnickäüdäkto walk, to go
4Proto-Finnickäwe-
5Proto-Germanic*skēwijanąto go
Every word from Proto-Indo-European én