Sufered or Suffered: How To spell?

The word Sufered is misspelled against Suffered, which is past tense of "Suffer"

Suffered has double "ff" is mispronounced as "f"
Remember double 'FF' in between the strings Su & ered which should not be misspelled with single 'F'
Wrong Spelling: Su-f-ered
Correct Spelling: Su-ff-ered
Check more misspelled words of Suffered to spell it correct.