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Words with 16 letters that end in 'ntennial'
quadricentennial sesquicentennialWords with 14 letters that end in 'ntennial'
quincentennial semicentennialWords with 13 letters that end in 'ntennial'
tercentennial tricentennialWords with 12 letters that end in 'ntennial'
bicentennialWords with 10 letters that end in 'ntennial'
centennial
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