Where does “buffettitarjoilu” come from?

buffettitarjoilu (Finnish) comes from Finnish tarjoilu, from Finnish tarjoilla, from Finnish tarjota, from Finnish tarjo-, from Finnish -ntä, from Proto-Finnic -nta — Forms action nouns from verbs.

Ancestry of “buffettitarjoilu”, step by step

buffettitarjoilu traces back through two separate lines of ancestry.

via Finnish tarjoilu

StepLanguageWordMeaning
1Finnishtarjoiluwaiting, service
2Finnishtarjoillato serve, dish out
3Finnishtarjotato offer; to treat; to serve
4Finnishtarjo-—
5Finnish-ntäFront vowel variant of -nta; API
6Proto-Finnic-ntaForms action nouns from verbs

via Finnish buffetti

StepLanguageWordMeaning
1Finnishbuffettibuffet
2Frenchbuffetsideboard, dresser; buffet
3Middle Frenchbufet—
4Old Frenchbufet—
5Old Frenchbuffeblow
Every word from Proto-Finnic -nta →Every word from Finnish -ntä →Every word from Finnish tarjo- →
buffettitarjoilu — Etymology, Origin & Word History | Etymology Explorer