Syllables    Synonyms    Quiz

efficacy

How many syllables in efficacy?

  4 syllables

Divide efficacy into syllables:   ef-fi-ca-cy
Stressed syllable in efficacy:   ef-fi-ca-cy
How to pronounce efficacy:   ef-i-kuh-see
How to say efficacy:

Cite This Source

Bibliography Citations
MLA   |    APA   |   Chicago Manual Style
"efficacy." HowManySyllables.com. How Many Syllables, n.d. Web. 23 May 2026.

Learn a New Word

Wondering why efficacy is 4 syllables?   Contact Us!   We'll explain.

Syllable Rules

1.  What is a syllable?
2.  How to count syllables.
3.  How to divide into syllables.

More Grammar
Trending Words
Pop Quiz
How well can you
rhyme?
Take the Rhyme Quiz

Syllables    Synonyms    Quiz

Synonyms for efficacy


1 syllable
  • worth
    2 syllables
    • value
      3 syllables
        4 syllables
        Let Teachers Teach™ Contest
        How could $250 help your students?

        Prize awarded to a teacher each month.
        $Read the contest rules and apply
        Fun Fact
        Monosyllabic means a word
        with 1 syllable.
        !See more facts
        Grammar
        How do you write a
        quote within a quote?
        ?Learn Here
        Ever Wonder
        when you should use
        Whether and Weather?
        Learn Here

        Parents, Teachers, StudentsDo you have a grammar question?
        Need help finding a syllable count?
        Want to say thank you?

        Contact Us!