The word Sliper is misspelled against Slipper, a noun meaning "A kind of apron or pinafore for children."
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Slipper has double "pp" is mispronounced as "p"
Remember double 'PP' in between the strings sli & er which should not be misspelled with single 'P'
Wrong Spelling:  sli-p-er 
Correct Spelling:  sli-pp-er 
Find more wrongly spelled words of Slipper to spell it well.