Disunder or Dissunder: How To spell?
The word Disunder is misspelled against Dissunder, a verb meaning "To separate; to sunder; to destroy."
Dissunder has double "ss" is mispronounced as "s"Remember double 'SS' in between the strings di & under which should not be misspelled with single 'S'
Wrong Spelling:  di-s-under  Correct Spelling:  di-ss-under 
Check more misspelled words of Dissunder to spell it correct.