Smothed or Smoothed: How To spell?

The word Smothed is misspelled against Smoothed, which is past tense of "Smooth"

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.

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