Retun or Retain: How To spell?
The word Retun is misspelled against Retain, a verb meaning "To belong; to pertain."
Word contains consecutive vowels 'AI' in between alphabets ret & n is misspelled as 'U'Wrong Spelling:  ret-u-n  Correct Spelling:  ret-ai-n 
Check more misspelled words of Retain to spell it correct.