Retrogresion or Retrogression: How To spell?

The word Retrogresion is misspelled against Retrogression, meaning "A going or moving backward or in a reverse direction."

Retrogression has double "ss" is mispronounced as "s"
Remember double 'SS' in between the strings retrogre & ion which should not be misspelled with single 'S'
Wrong Spelling: retrogre-s-ion
Correct Spelling: retrogre-ss-ion
Find more incorrect spellings of Retrogression to spell right way.