Understaur or Understair: How To spell?

The word Understaur is misspelled against Understair, an adjective meaning "pertaining to the kitchen, the servants' quarters; hence, subdinate; menial."

Word contains consecutive vowels 'AI' in between alphabets underst & r is misspelled as 'AU'
Wrong Spelling:  underst-au-r 
Correct Spelling:  underst-ai-r 
Check more misspelled words of Understair to spell it correct.

You might be interested to know

Villaunies or Villainies?

Waylaud or Waylaid?

Amayn or Amain?