Causticaly or Caustically: How To spell?
The word Causticaly is misspelled against Caustically, an adverb meaning "In a caustic manner."
Caustically has double "ll" is mispronounced as "l"Remember double 'LL' in between the strings caustica & y which should not be misspelled with single 'L'
Wrong Spelling:  caustica-l-y  Correct Spelling:  caustica-ll-y 
Check more misspelled words of Caustically to spell it correct.