Retos or Retoss: How To spell?
The word Retos is misspelled against Retoss, a verb meaning "To toss back or again."
Retoss has double 'ss' in the end mispronounced as 's'Remember double 'SS' appears in the end of this word which should not be misspelled with single 'S'
Wrong Spelling:  reto-s  Correct Spelling:  reto-ss 
Find more incorrect spellings of Retoss to spell right way.