The word Yesteryaur is misspelled against Yesteryear, a noun meaning "The year last past; last year."
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Yesteryear has vowels 'ea' together mispronounced as 'au'
Word contains consecutive vowels 'EA' in between alphabets yestery & r is misspelled as 'AU'
Wrong Spelling:  yestery-au-r 
Correct Spelling:  yestery-ea-r 
Check more misspelled words of Yesteryear to spell it correct.