Impeler or Impeller: How To spell?
The word Impeler is misspelled against Impeller, a noun meaning "One who, or that which, impels."
Impeller has double "ll" is mispronounced as "l"Remember double 'LL' in between the strings impe & er which should not be misspelled with single 'L'
Wrong Spelling:  impe-l-er  Correct Spelling:  impe-ll-er 
Explore spell check of Impeller to spell without errors.