To pronounce "efficaciousness", say EFF-ic-ac-iousn-ess — 5 syllables. Tap play below to hear it in four English accents, or practice it syllable by syllable.
efficaciousness
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5
Syllables
15
Letters
EFF-ic-ac-iousn-ess
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"efficaciousness" has 5 syllables: eff-ic-ac-iousn-ess.
"Efficaciousness" has 5 syllables: eff · ic · ac · iousn · ess.
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