Waster or Waister: How To spell?

The word Waster is misspelled against Waister, a noun meaning "A seaman, usually a green hand or a broken-down man, stationed in the waist of a vessel of war."

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

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