Ster or Stair: How To spell?

The word Ster 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 'E'
Wrong Spelling: st-e-r
Correct Spelling: st-ai-r
Explore spell check of Stair to spell without errors.