effective

Getting results reliably

Effective means producing the intended result.

An effective treatment works; an effective leader gets things done.

Something effective has the power to accomplish its purpose: The new policy proved effective at reducing wait times.

Effective also marks when something takes force: The changes become effective January 1.

The distinction from efficient is that effective concerns results while efficient concerns resources—a method can be effective but wasteful.

efficient

productive

Generating useful output

capable · competent · skillful · resourceful · systematic · methodical · organized · time-saving · high-yield · fruitful

functional

working

In active function

active · practical · usable · serviceable · applicable · actionable · workable · running · performing · viable

persuasive

convincing

Able to persuade

eloquent · articulate · authoritative · believable · plausible · cogent · lucid · coherent · logical · influential

potent

powerful

Having great strength

dynamic · intense · forceful · concentrated · high-impact · formidable · mighty · commanding · dominant · hard-hitting

impactful

results

What follows from effort

progress · achievement · transformation · benefit · advancement · change · enhancement · breakthrough · development · gain

Categories
Opposites
efficacy/results

effectiveineffective

Lacking power to achieve

useless · futile · ineffectual · fruitless · unproductive

operational status

effectiveinvalid

Without legal force

void · inoperative · expired · null · defunct

PRACTICAL vs THEORETICAL

effectivetheoretical

Based on hypothesis, untested

nominal · hypothetical · abstract · impractical · notional

Phrases
Family

effectively, ineffective, effectiveness, effecting, ineffectiveness, ineffectively

Familiarity
Top 10,000
Profile
Known to kids · Used worldwide · Timeless · Abstract · Positive · Everyday, not technical · Rated G