Fennist

Etymology tree
Proto-Germanic *finnazder.?
Latin Fennusder.
Finnish fenno-
Proto-Indo-European *-id-
Proto-Indo-European *-yéti
Proto-Indo-European *-idyéti
Proto-Hellenic *-íďďō
Ancient Greek -ῐ́ζω (-ĭ́zō)
Proto-Hellenic *-tās
Ancient Greek -τής (-tḗs)
Ancient Greek -ῐστής (-ĭstḗs)der.
Finnish -isti
Finnish fennistider.
English Fennist
Derived from or influenced by Finnish fennisti. By surface analysis, Fenn- + -ist.