Imperiling or Imperilling: How To spell?
The word Imperiling is misspelled against Imperilling, which is present continuous of "Imperil"
Imperilling has double "ll" is mispronounced as "l"Remember double 'LL' in between the strings imperi & ing which should not be misspelled with single 'L'
Wrong Spelling:  imperi-l-ing  Correct Spelling:  imperi-ll-ing 
Find more wrongly spelled words of Imperilling to spell it well.