The word Sleetines is misspelled against Sleetiness, a noun meaning "The state of being sleety."
-->
Sleetiness 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:  sleetine-s 
Correct Spelling:  sleetine-ss 
Find more wrongly spelled words of Sleetiness to spell it well.