Dereilment or Derailment: How To spell?
The word Dereilment is misspelled against Derailment, a noun meaning "The act of going off, or the state of being off, the rails of a railroad."
Word contains consecutive vowels 'AI' in between alphabets der & lment is misspelled as 'EI'Wrong Spelling:  der-ei-lment  Correct Spelling:  der-ai-lment 
Find more wrongly spelled words of Derailment to spell it well.