Downstirs or Downstairs: How To spell?

The word Downstirs is misspelled against Downstairs, an adjective meaning "Below stairs; as, a downstairs room."

Word contains consecutive vowels 'AI' in between alphabets downst & rs is misspelled as 'I'
Wrong Spelling:  downst-i-rs 
Correct Spelling:  downst-ai-rs 
Find more incorrect spellings of Downstairs to spell right way.

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