radioactive

How many syllables in radioactive?

  345729186 syllables

Divide radioactive into syllables:   ra-di-o-ac-tive
Primary syllable stress:   ra-di-o-ac-tive
Secondary syllable stress:   ra-di-o-ac-tive
How to pronounce radioactive:   rey-dee-oh-ak-tiv
How to say radioactive:

Cite This Source

Bibliography Citations
MLA   |    APA   |   Chicago Manual Style
"radioactive." HowManySyllables.com. How Many Syllables, n.d. Web. 15 June 2025.

Learn a New Word

Rhyme Quiz
Think you can
rhyme?
What rhymes with radioactive

2 syllables
  • active
    3 syllables
    4 syllables
    5 syllables
    Teachers
    What can $250 do for your classroom?

    One prize is awarded to
    one teacher, every month.
    Fun Fact
    Write swims on paper. Flip
    the paper 180°. It's still swims!
    Why Is
    Why is orange
    2 syllables?
    Ever Wonder
    when you should use
    There, Their, & They're?

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