Sterhead or Stairhead: How To spell?

The word Sterhead is misspelled against Stairhead, a noun meaning "The head or top of a staircase."

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

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