Downsters or Downstairs: How To spell?

The word Downsters 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 'E'
Wrong Spelling:  downst-e-rs 
Correct Spelling:  downst-ai-rs 
Find more incorrect spellings of Downstairs to spell right way.

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