Teder or Tedder: How To spell?
The word Teder is misspelled against Tedder, a noun meaning "A machine for stirring and spreading hay, to expedite its drying."
Tedder has double "dd" is mispronounced as "d"Remember double 'DD' in between the strings Te & er which should not be misspelled with single 'D'
Wrong Spelling:  Te-d-er  Correct Spelling:  Te-dd-er 
Explore spell check of Tedder to spell without errors.