Streghtener or Straightener: How To spell?

The word Streghtener is misspelled against Straightener, a noun meaning "One who, or that which, straightens."

Word contains consecutive vowels 'AI' in between alphabets str & ghtener is misspelled as 'E'
Wrong Spelling:  str-e-ghtener 
Correct Spelling:  str-ai-ghtener 
Explore spell check of Straightener to spell without errors.

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