All in all, manipulation more impressive in its nakedness than in its sophistication—or, ultimately, its effectiveness.
For drug users of most levels, she noted, “Cost, effectiveness, and availability are far more important than the legality.”
Yet the focus of the anti-vaccine crowd is not effectiveness, but safety.
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.
Blank ended his argument in a voice that left no doubt of his own faith in the effectiveness of his logic.
But force of habit had utterly dulled its effectiveness as a weapon.
It is a new experience of the beauty and effectiveness of simple grass.
Because of their limitations, however, their effectiveness can be furthered by interpretation.
A variation in the depth of color of these lines adds to the effectiveness of the design.
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.