Obtean or Obtain: How To spell?

The word Obtean is misspelled against Obtain, meaning "to be established accepted or customary"

Word contains consecutive vowels 'AI' in between alphabets obt & n is misspelled as 'EA'
Wrong Spelling:  obt-ea-n 
Correct Spelling:  obt-ai-n 
Explore spell check of Obtain to spell without errors.

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