Superading or Superadding: How To spell?

The word Superading is misspelled against Superadding, which is present continuous of "Superadd"

Superadding has double "dd" is mispronounced as "d"
Remember double 'DD' in between the strings Supera & ing which should not be misspelled with single 'D'
Wrong Spelling: Supera-d-ing
Correct Spelling: Supera-dd-ing
Check more misspelled words of Superadding to spell it correct.