Principaly or Principally: How To spell?
The word Principaly is misspelled against Principally, an adverb meaning "In a principal manner; primarily; above all; chiefly; mainly."
Principally has double "ll" is mispronounced as "l"Remember double 'LL' in between the strings principa & y which should not be misspelled with single 'L'
Wrong Spelling:  principa-l-y  Correct Spelling:  principa-ll-y 
Find more wrongly spelled words of Principally to spell it well.