For drug users of most levels, she noted, “Cost, effectiveness, and availability are far more important than the legality.”
Ever since it was created in 1965, politicians and researchers have studied and debated its effectiveness.
But the most objective measure of the technology gap can be seen in the effectiveness of their online outreach.
late 14c., from French effectif, from Latin effectivus "productive, effective," from effect-, stem of efficere (see effect (n.)). Effectively in the sense of "actually" is attested by 1650s. Related: Effectivity.