Threder or Threader: How To spell?
The word Threder is misspelled against Threader, a noun meaning "A device for assisting in threading a needle."
Threader has vowels 'ea' together mispronounced as 'e'Word contains consecutive vowels 'EA' in between alphabets thr & der is misspelled as 'E'
Wrong Spelling:  thr-e-der  Correct Spelling:  thr-ea-der 
Explore spell check of Threader to spell without errors.