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