Stiffteol or Stifftail: How To spell?

The word Stiffteol is misspelled against Stifftail, a noun meaning "The ruddy duck."

Word contains consecutive vowels 'AI' in between alphabets stifft & l is misspelled as 'EO'
Wrong Spelling:  stifft-eo-l 
Correct Spelling:  stifft-ai-l 
Find more incorrect spellings of Stifftail to spell right way.

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