Stiar or Stair: How To spell?
The word Stiar is misspelled against Stair, a noun meaning "A series of steps, as for passing from one story of a house to another; -- commonly used in the plural; but originally used in the singular only."
Word contains consecutive vowels 'AI' in between alphabets st & r is misspelled as 'IA'Wrong Spelling:  st-ia-r  Correct Spelling:  st-ai-r 
Find more wrongly spelled words of Stair to spell it well.