The word Centenially is misspelled against Centennially, an adverb meaning "Once in a hundred years."
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Centennially has double "nn" is mispronounced as "n"
Remember double 'NN' in between the strings cente & ially which should not be misspelled with single 'N'
Wrong Spelling: cente-n-ially
Correct Spelling: cente-nn-ially
Find more wrongly spelled words of Centennially to spell it well.