Sustonable or Sustainable: How To spell?
The word Sustonable is misspelled against Sustainable, an adjective meaning "Capable of being sustained or maintained; as, the action is not sustainable."
Word contains consecutive vowels 'AI' in between alphabets sust & nable is misspelled as 'O'Wrong Spelling:  sust-o-nable  Correct Spelling:  sust-ai-nable 
Check more misspelled words of Sustainable to spell it correct.