Guesingly or Guessingly: How To spell?
The word Guesingly is misspelled against Guessingly, an adverb meaning "By way of conjecture."
Guessingly has double "ss" is mispronounced as "s"Remember double 'SS' in between the strings gue & ingly which should not be misspelled with single 'S'
Wrong Spelling:  gue-s-ingly  Correct Spelling:  gue-ss-ingly 
Check more misspelled words of Guessingly to spell it correct.