Where does “ефективність” come from?
ефективність (Ukrainian) comes from Ukrainian ефекти́вний, from Latin effectīvus, from Latin efficiō, from Latin ex, from Latin commūnicō, from Latin commūnis, from Old Latin com(m)oinis, from Proto-Italic kommoinis — resin, gum; to say, speak.
ефективність (Ukrainian): effectiveness
Ancestry of “ефективність”, step by step