effective

[ih-fek-tiv, ee-fek‐] / ɪˈfɛk tɪv, iˈfɛk‐ /

ADJECTIVE

successful, persuasive

Synonyms

STRONGEST

active adequate compelling competent direct efficient forceful impressive potent powerful practical successful useful valid

STRONG

effectual efficacious

WEAK

able big-wheel capable cogent convincing emphatic energetic forcible having lead in pencil live moving on the ball operative persuasive playing hardball powerhouse producing resultant serviceable serving sound striking telling trenchant virtuous wicked yielding

Antonyms

STRONGEST

helpless impotent inadequate incapable incompetent ineffective inefficient insufficient unable useless weak worthless

STRONG

unproductive unsuccessful

WEAK

fruitless inoperative

ADJECTIVE

in use at the time

Synonyms

STRONGEST

active direct dynamic

WEAK

actual current in effect in execution in force in operation operative real

Antonyms

STRONGEST

inactive

WEAK

fruitless impotent incapable ineffective inoperative unproductive useless weak

Usage

What are other ways to say effective? The adjective effective is applied to a person or a thing that has the power to, or which actually does, produce an effect: an effective boss, remedy, speech. Effectual is used especially of that which produces the effect desired or intended, or a decisive result: An effectual bombardment silenced the enemy. Efficacious suggests the capability of achieving a certain end: an efficacious plan, medicine. Efficient (applied also to persons) implies the skillful use of energy or industry to accomplish desired results with little waste of effort: efficient methods; an efficient manager.

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Ukraine has developed a suit of tools to fend off nightly Russian drone attacks, chief among then cheap and highly effective drone-on-drone interceptors.

From Barron's

Egypt has been particularly affected by the Middle East conflict and the effective blockade of the Strait of Hormuz, a key shipping route for oil and liquefied natural gas.

From BBC

Karnofsky was the founder of a philanthropy that promoted effective altruism, a movement that was one of the first communities to take the potential power, and danger, of AI seriously.

From The Wall Street Journal

But substantial questions still surround the evidence and call into question whether legislation is an effective cure with no serious side effects.

From The Wall Street Journal

The effective closure of the Strait of Hormuz —a vital maritime choke point—has boosted energy prices.

From Barron's

effective

Usage

Example Sentences

Related Words