aggressivist

Etymology tree
Proto-Indo-European *h₂éd
Proto-Italic *ad
Proto-Italic *ad-
Latin ad-
Proto-Indo-European *gʰredʰ-der.
Latin gradior
Latin aggredior
Latin aggressuslbor.
English aggress
Proto-Indo-European *-wós
Proto-Indo-European *-iHwósder.
Latin -īvus
Old French -ifbor.
Middle English -yf
English -ive
English aggressive
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)bor.
Latin -istader.
Old French -istebor.
Middle English -ist
English -ist
English aggressivist
From aggressive + -ist.