Synonyms of effective

1 Syllable

thest, smart, live, sound, ther, vet, chief, going

2 Syllables

working, potent, smartest, striking, phenom, theatric, fruitful, smarter, able, cogent, moving, telling, valid, smarted, well-spent, direct, trenchant, veter, bullish, pithy, wicked, chiefest, virtuous, pithier, well-done, serving, yielding, pithiest

3 Syllables

resultant, eggheaded, vigorous, powerful, imposing, effectual, marrowy, producing, go-getting, expedient, emphatic, practical, convincing, forcible, becoming, proficient, hard-hitting, takeover, dramatic, capable, well-chosen, efficient, clean-living, compelling, impactful, dynamic, dominant, active, inerrant, take-charge, take-over, hard-driving, sufficient, gogetting, competent, elegant, short-and-sweet, useful, forceful

4 Syllables

high-powered, productive, infallible, tragicomic, impressive, serviceable, providential, adequate, histrionical, inerrable, profitable, all-purpose, apodictic, nimble-witted, overweighing, expeditious, predominant, efficacious, exertive, constructive, forward-looking, powerhouse, self-sustaining, energetic

5 Syllables

businesslike, operative, undeceivable, utilitarian, overbalancing