Superad or Superadd: How To spell?
The word Superad is misspelled against Superadd, meaning "To add in addition to what has been added."
Superadd has double 'dd' in the end mispronounced as 'd'Remember double 'DD' appears in the end of this word which should not be misspelled with single 'D'
Wrong Spelling:  supera-d  Correct Spelling:  supera-dd 
Check more misspelled words of Superadd to spell it correct.