How to Pronounce Efficacy

To pronounce "efficacy", say EFF-ic-acy — 3 syllables, IPA /ˈɛf.ɪ.kə.si/. Tap play below to hear it in four English accents, or practice it syllable by syllable.

efficacy

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Accent

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Speed

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3

Syllables

8

Letters

/ˈɛf.ɪ.kə.si/

IPA

💡 Tip for remembering “efficacy”

"efficacy" has 3 syllables: eff-ic-acy. It rhymes with assay and brassy, if that helps it stick.

What does efficacy mean?

noun

  1. Ability to produce a desired effect under ideal testing conditions.
  2. Degree of ability to produce a desired effect.

Synonyms

efficacity

Hear “efficacy” in real sentences

Real example sentences from Tatoeba (CC-BY) — tap to hear each one, or see it used on YouGlish.

Words that rhyme with efficacy

Practicing rhymes trains the same ending sounds.

assaybrassysassychassisclassyglassyprofligacycassiegassygrassybrassiemassy

Related words

efficaciousnessefficaciouseffectiveeffectivenessusefulnessutilityefficiencyefficient

Frequently asked questions

How many syllables are in "efficacy"?▾

"Efficacy" has 3 syllables: eff · ic · acy.

What is the IPA transcription of "efficacy"?▾

The IPA transcription of "efficacy" is /ˈɛf.ɪ.kə.si/.

What does "efficacy" mean?▾

Efficacy: Ability to produce a desired effect under ideal testing conditions.

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