Manpernable or Mainpernable: How To spell?

The word Manpernable is misspelled against Mainpernable, an adjective meaning "Capable of being admitted to give surety by mainpernors; able to be mainprised."

Word contains consecutive vowels 'AI' in between alphabets m & npernable is misspelled as 'A'
Wrong Spelling:  m-a-npernable 
Correct Spelling:  m-ai-npernable 
Explore spell check of Mainpernable to spell without errors.

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