To pronounce "fastness", say FASTN-ess — 2 syllables. Tap play below to hear it in four English accents, or practice it syllable by syllable.
fastness
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Accent
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2
Syllables
8
Letters
FASTN-ess
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"fastness" has 2 syllables: fastn-ess. It rhymes with steadfastness and vastness, if that helps it stick.
Practicing rhymes trains the same ending sounds.
"Fastness" has 2 syllables: fastn · ess.
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