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