Unthrad or Unthread: How To spell?

The word Unthrad is misspelled against Unthread, a verb meaning "To deprive of ligaments; to loose the ligaments of."

Unthread has vowels 'ea' together mispronounced as 'a'
Word contains consecutive vowels 'EA' in between alphabets unthr & d is misspelled as 'A'
Wrong Spelling:  unthr-a-d 
Correct Spelling:  unthr-ea-d 
Browse incorrect spellings of Unthread to spell it good.

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