The word Tothful is misspelled against Toothful, an adjective meaning "Toothsome."
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Toothful has double "oo" is mispronounced as "o"
Remember double 'OO' in between the strings t & thful which should not be misspelled with single 'O'
Wrong Spelling:  t-o-thful 
Correct Spelling:  t-oo-thful 
Check more misspelled words of Toothful to spell it correct.