Tachless or Teachless: How To spell?

The word Tachless is misspelled against Teachless, an adjective meaning "Not teachable."

Teachless has vowels 'ea' together mispronounced as 'a'
Word contains consecutive vowels 'EA' in between alphabets t & chless is misspelled as 'A'
Wrong Spelling:  t-a-chless 
Correct Spelling:  t-ea-chless 
Explore spell check of Teachless to spell without errors.

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