The word Septennialy is misspelled against Septennially, an adverb meaning "Once in seven years."
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Septennially has double "ll" is mispronounced as "l"
Remember double 'LL' in between the strings septennia & y which should not be misspelled with single 'L'
Wrong Spelling: septennia-l-y
Correct Spelling: septennia-ll-y
Find more wrongly spelled words of Septennially to spell it well.