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INEFFICACIOUS Antonyms

There are 11 antonyms of the word inefficacious. (opposite meanings)

Best Opposite Words For INEFFICACIOUS

WordSaveSyns..UsageType
capable

adjective

adj

adjective

• (usually followed by `of') having capacity or ability

• (followed by `of') having the temperament or inclination for

adjective satellite

• possibly accepting or permitting

• having the requisite qualities for

• have the skills and qualifications to do things well

competent

adjective

adj

adjective

• properly or sufficiently qualified or capable or efficient

• legally qualified or sufficient

adjective satellite

• adequate, but not outstanding or exceptional

effective

adverb, adjective

adv, adj

adjective

• producing or capable of producing an intended result or having a striking effect

adjective satellite

• able to accomplish a purpose; functioning effectively

• works well as a means or remedy

• exerting force or influence

• existing in fact; not theoretical; real

• ready for service

efficient

adjective

adj

adjective

• being effective without wasting time or effort or expense

adjective satellite

• able to accomplish a purpose; functioning effectively

influential

adjective

adj

adjective

• having or exercising influence or power

potent

adjective

adj

adjective

• having a strong physiological or chemical effect

• (of a male) capable of copulation

adjective satellite

• having great influence

• having or wielding force or authority

powerful

adjective

adj

adjective

• having great power or force or potency or effect

adverb

• (Southern regional intensive) very; to a great degree

adjective satellite

• strong enough to knock down or overwhelm

• having great influence

• (of a person) possessing physical strength and weight; rugged and powerful

• displaying superhuman strength or power

productive

adjective

adj

adjective

• producing or capable of producing (especially abundantly)

• having the ability to produce or originate

adjective satellite

• yielding positive results

• marked by great fruitfulness

strong

adjective

adj

adjective

• having strength or power greater than average or expected

• having a strong physiological or chemical effect

adjective satellite

• not faint or feeble

• having or wielding force or authority

• immune to attack; incapable of being tampered with

• of good quality and condition; solidly built

• of verbs not having standard (or regular) inflection

• being distilled rather than fermented; having a high alcoholic content

• freshly made or left

• strong and sure

successful

adjective

adj

adjective

• having succeeded or being marked by a favorable outcome

efficacious

adjective

adj

adjective

• marked by qualities giving the power to produce an intended effect

• producing or capable of producing an intended result or having a striking effect

Alternatives for CAPABLE

Words (16)
Phrases (3)

Alternatives for COMPETENT

Words (14)

Alternatives for EFFECTIVE

Words (21)
Phrases (2)

Alternatives for EFFICIENT

Words (21)

Alternatives for INFLUENTIAL

Words (34)

Alternatives for POTENT

Words (23)

Alternatives for POWERFUL

Words (46)
Phrases (1)

Alternatives for PRODUCTIVE

Words (12)