Decusatively or Decussatively: How To spell?
The word Decusatively is misspelled against Decussatively, an adverb meaning "Crosswise; in the form of an X."
Decussatively has double "ss" is mispronounced as "s"Remember double 'SS' in between the strings decu & atively which should not be misspelled with single 'S'
Wrong Spelling:  decu-s-atively  Correct Spelling:  decu-ss-atively 
Check more misspelled words of Decussatively to spell it correct.