Sustaner or Sustainer: How To spell?

The word Sustaner is misspelled against Sustainer, a noun meaning "One who, or that which, sustains."

Word contains consecutive vowels 'AI' in between alphabets sust & ner is misspelled as 'A'
Wrong Spelling:  sust-a-ner 
Correct Spelling:  sust-ai-ner 
Check more misspelled words of Sustainer to spell it correct.

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