Retonment or Retainment: How To spell?
The word Retonment is misspelled against Retainment, a noun meaning "The act of retaining; retention."
Word contains consecutive vowels 'AI' in between alphabets ret & nment is misspelled as 'O'Wrong Spelling:  ret-o-nment  Correct Spelling:  ret-ai-nment 
Find more incorrect spellings of Retainment to spell right way.