Suden or Sudden: How To spell?
The word Suden is misspelled against Sudden, a noun meaning "An unexpected occurrence; a surprise."
Sudden has double "dd" is mispronounced as "d"Remember double 'DD' in between the strings Su & en which should not be misspelled with single 'D'
Wrong Spelling:  Su-d-en  Correct Spelling:  Su-dd-en 
Check more misspelled words of Sudden to spell it correct.