The word Smothed is misspelled against Smoothed, which is past tense of "Smooth"
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Smoothed has double "oo" is mispronounced as "o"
Remember double 'OO' in between the strings sm & thed which should not be misspelled with single 'O'
Wrong Spelling:  sm-o-thed 
Correct Spelling:  sm-oo-thed 
Find more incorrect spellings of Smoothed to spell right way.