Quadrennialy or Quadrennially: How To spell?

The word Quadrennialy is misspelled against Quadrennially, an adverb meaning "Once in four years."

Quadrennially has double "ll" is mispronounced as "l"
Remember double 'LL' in between the strings quadrennia & y which should not be misspelled with single 'L'
Wrong Spelling:  quadrennia-l-y 
Correct Spelling:  quadrennia-ll-y 
Check more misspelled words of Quadrennially to spell it correct.