The word Titered is misspelled against Tittered, which is past tense of "Titter"
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Tittered has double "tt" is mispronounced as "t"
Remember double 'TT' in between the strings ti & ered which should not be misspelled with single 'T'
Wrong Spelling:  ti-t-ered 
Correct Spelling:  ti-tt-ered 
Find more wrongly spelled words of Tittered to spell it well.