Undefaesible or Undefeasible: How To spell?

The word Undefaesible is misspelled against Undefeasible, an adjective meaning "Indefeasible."

--> Undefeasible has vowels 'ea' together mispronounced as 'ae'
Word contains consecutive vowels 'EA' in between alphabets undef & sible is misspelled as 'AE'
Wrong Spelling:  undef-ae-sible 
Correct Spelling:  undef-ea-sible 
Find more wrongly spelled words of Undefeasible to spell it well.

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