Centennialy or Centennially: How To spell?

The word Centennialy is misspelled against Centennially, an adverb meaning "Once in a hundred years."

Centennially has double "ll" is mispronounced as "l"
Remember double 'LL' in between the strings centennia & y which should not be misspelled with single 'L'
Wrong Spelling:  centennia-l-y 
Correct Spelling:  centennia-ll-y 
Find more wrongly spelled words of Centennially to spell it well.