Upstars or Upstairs: How To spell?

The word Upstars is misspelled against Upstairs, an adjective meaning "Being above stairs; as, an upstairs room."

Word contains consecutive vowels 'AI' in between alphabets upst & rs is misspelled as 'A'
Wrong Spelling:  upst-a-rs 
Correct Spelling:  upst-ai-rs 
Browse incorrect spellings of Upstairs to spell it good.

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