isoeffectively

Etymology tree
Ancient Greek ῐ̓́σος (ĭ́sos)lbor.
English iso-
Proto-Indo-European *h₁éǵʰ
Proto-Indo-European *-s
Proto-Indo-European *h₁éǵʰs
Proto-Italic *eks
Latin ex
Latin ef-
Proto-Indo-European *dʰeh₁k-
Proto-Indo-European *-yéti
Proto-Indo-European *dʰh₁kyéti
Proto-Italic *θakjō
Proto-Italic *fakjō
Latin faciō
Latin efficiō
Proto-Indo-European *-wós
Proto-Indo-European *-iHwósder.
Latin -īvus
Latin effectivusbor.
French effectifder.
English effective
Proto-Indo-European *leyg-der.
Proto-Germanic *līkąder.
Proto-Germanic *-līkaz
Proto-Germanic *-ê
Proto-Germanic *-līkê
Proto-West Germanic *-līkē
Old English -līċe
Middle English -ly
English -ly
English effectively
English isoeffectively
From iso- + effectively.