Tifed or Tiffed: How To spell?
The word Tifed is misspelled against Tiffed, which is past tense of "Tiff"
Tiffed has double "ff" is mispronounced as "f"Remember double 'FF' in between the strings Ti & ed which should not be misspelled with single 'F'
Wrong Spelling:  Ti-f-ed  Correct Spelling:  Ti-ff-ed 
Find more wrongly spelled words of Tiffed to spell it well.