It was aggressive, it was unapologetic, it was necessary, and it was effective.
The authors found that "very hard exercise" was almost twice as effective as "moderate" exercise.
Yes, he ran a magnificent, vicious, and effective campaign, one to be studied by political masterminds for generations.
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.