The word Steplader is misspelled against Stepladder, a noun meaning "A portable set of steps."
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Stepladder has double "dd" is mispronounced as "d"
Remember double 'DD' in between the strings Stepla & er which should not be misspelled with single 'D'
Wrong Spelling:  Stepla-d-er 
Correct Spelling:  Stepla-dd-er 
Explore spell check of Stepladder to spell without errors.