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