Lesening or Lessening: How To spell?
The word Lesening is misspelled against Lessening, which is present continuous of "Lessen"
Lessening has double "ss" is mispronounced as "s"Remember double 'SS' in between the strings le & ening which should not be misspelled with single 'S'
Wrong Spelling:  le-s-ening  Correct Spelling:  le-ss-ening 
Find more wrongly spelled words of Lessening to spell it well.