The word Muntunable is misspelled against Maintainable, an adjective meaning "That maybe maintained."
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Word contains consecutive vowels 'AI' twice is misspelled as 'U'
Wrong Spelling:  m-u-nt-u-nable 
Correct Spelling:  m-ai-nt-ai-nable 
Check more misspelled words of Maintainable to spell it correct.