Accidentaly or Accidentally: How To spell?
The word Accidentaly is misspelled against Accidentally, an adverb meaning "In an accidental manner; unexpectedly; by chance; unintentionally; casually; fortuitously; not essentially."
Accidentally has double "ll" is mispronounced as "l"Remember double 'LL' in between the strings accidenta & y which should not be misspelled with single 'L'
Wrong Spelling:  accidenta-l-y  Correct Spelling:  accidenta-ll-y 
Find more wrongly spelled words of Accidentally to spell it well.