The word Smothing is misspelled against Smoothing, an adjective meaning "fr. Smooth, v."
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Smoothing has double "oo" is mispronounced as "o"
Remember double 'OO' in between the strings sm & thing which should not be misspelled with single 'O'
Wrong Spelling:  sm-o-thing 
Correct Spelling:  sm-oo-thing 
Find more incorrect spellings of Smoothing to spell right way.