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