How many syllables in animosity? 5 syllables. Divide animosity into syllables: an-i-mos-i-ty. Primary syllable stress: an-i-mos-i-ty. Secondary syllable stress: an-i-mos-i-ty. How to pronounce animosity: an-uh-mos-i-tee. How to say animosity: pronounce syllables in animosity. Cite This Source.