Stadness or Staidness: How To spell?

The word Stadness is misspelled against Staidness, a noun meaning "The quality or state of being staid; seriousness; steadiness; sedateness; regularity; -- the opposite of wildness, or levity."

Word contains consecutive vowels 'AI' in between alphabets st & dness is misspelled as 'A'
Wrong Spelling:  st-a-dness 
Correct Spelling:  st-ai-dness 
Explore spell check of Staidness to spell without errors.

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