Origin of effective
Examples from the Web for effective
He could deliver a quick, effective speech, or hold a proper press conference.
If the embargo were effective, the Castro brothers would have been doing Love Letters with the Duvaliers years ago.
Build evidence about the practices, policies, and programs that will achieve the most effective and efficient results.
While there are a couple of antibiotics that usually work, if they are overused they, too, may cease to be effective.Without Education, Antibiotic Resistance Will Be Our Greatest Health Crisis|Russell Saunders|December 19, 2014|DAILY BEAST
In order to know what innovations work, you have to have good information on how effective your practices are.
They were just returning to the shelter of the doorway when two shots rang out, but neither was effective.The Campaign of the Jungle|Edward Stratemeyer
Rapid-fire guns of this class represent the most effective form of modern ordnance.The Progress of Invention in the Nineteenth Century.|Edward W. Byrn
They were all effective, and though Boxer Hall tried to stem the rush, it was impossible.A Quarter-Back's Pluck|Lester Chadwick
The vocal and instrumental combinations are undoubtedly happy and effective.Verdi: Man and Musician|Frederick James Crowest
Her hands and arms were enfolded in the blanket, and she was unable to make anything like effective resistance.Frank Merriwell's Pursuit|Burt L. Standish
British Dictionary definitions for effective
Word Origin and History for effective
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.