To pronounce "radioactivity", say RAD-ioact-iv-ity — 4 syllables. Tap play below to hear it in four English accents, or practice it syllable by syllable.
radioactivity
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4
Syllables
13
Letters
RAD-ioact-iv-ity
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"radioactivity" has 4 syllables: rad-ioact-iv-ity. It rhymes with proclivity and activity, if that helps it stick.
Practicing rhymes trains the same ending sounds.
"Radioactivity" has 4 syllables: rad · ioact · iv · ity.
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