The word Heirtdeep is misspelled against Heartdeep, an adjective meaning "Rooted in the heart."
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Heartdeep has vowels 'ea' together mispronounced as 'ei'
Word contains consecutive vowels 'EA' in between alphabets h & rtdeep is misspelled as 'EI'
Wrong Spelling:  h-ei-rtdeep 
Correct Spelling:  h-ea-rtdeep 
Find more wrongly spelled words of Heartdeep to spell it well.