effective | Definition of effective

Synonyms and Antonyms of effective

1 producing or capable of producing a desired result

an effective treatment of the once-dreaded disease

gave an effective speech that won over many undecided voters

Synonyms of effective

effectual, efficacious, efficient, fruitful, operative, potent, productive

Words Related to effective

hyperefficient, ultraefficient

adequate, capable, competent

accomplished, adept, consummate, experienced, expert, masterly, practiced (also practised), proficient, skilled, skillful, versed, veteran, virtuoso

cogent, convincing, killer, sound, striking, telling, valid

active, dynamic

useful, working

applicable, feasible, functional, practicable, practical, realizable, usable (also useable), workable

Near Antonyms of effective

counterproductive

incapable, incompetent, inexperienced, inexpert, unqualified, unseasoned, unskilled, unskillful

abortive, bootless, futile, vain

empty, hollow, idle, pointless, unavailing, unprofitable, unsuccessful

inoperative, worthless

Antonyms of effective

fruitless, ineffective, ineffectual, inefficient, inoperative, unfruitful, unproductive, useless

2 having the power to persuade

made an effective argument in favor of the proposal

Synonyms of effective

cogent, compelling, conclusive, convincing, decisive, forceful, persuasive, satisfying, strong, telling

Words Related to effective

authoritative, definitive

sound, valid, well-founded

important, significant, weighty

material, pertinent, relevant

Near Antonyms of effective

groundless, invalid, shaky, unfounded, unsound

inconsequential, insignificant, unimportant

immaterial, irrelevant

Antonyms of effective

inconclusive, indecisive, ineffective, uncompelling, unconvincing, unpersuasive

3 existing in fact and not merely as a possibility

made the mistake of confusing the plant's production capacity with its effective output

Synonyms of effective

actual, concrete, de facto, existent, factual, genuine, real, sure-enough, true, very

Words Related to effective

attested, authenticated, confirmed, demonstrated, established, proven, substantiated, valid, validated, verified

incontestable, incontrovertible, indisputable, indubitable, inescapable, irrefutable, undeniable, unquestionable

believable, convincing, literal, realistic, unmistakable, verifiable

authentic, bona fide, real-life, real-world

absolute, certain, final, hard, objective, palpable, positive