The word Teasponfuls is misspelled against Teaspoonfuls, which is plural of "Teaspoonful"
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Teaspoonfuls has double "oo" is mispronounced as "o"
Remember double 'OO' in between the strings teasp & nfuls which should not be misspelled with single 'O'
Wrong Spelling: teasp-o-nfuls
Correct Spelling: teasp-oo-nfuls
Check more misspelled words of Teaspoonfuls to spell it correct.