The word Stil is misspelled against Still, a noun meaning "A steep hill or ascent."
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Still has double 'll' in the end mispronounced as 'l'
Remember double 'LL' appears in the end of this word which should not be misspelled with single 'L'
Wrong Spelling:  sti-l 
Correct Spelling:  sti-ll 
Find more wrongly spelled words of Still to spell it well.