The word Sweetheyrt is misspelled against Sweetheart, a noun meaning "A lover of mistress."
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Sweetheart has vowels 'ea' together mispronounced as 'ey'
Word contains consecutive vowels 'EA' in between alphabets sweeth & rt is misspelled as 'EY'
Wrong Spelling:  sweeth-ey-rt 
Correct Spelling:  sweeth-ea-rt 
Explore spell check of Sweetheart to spell without errors.