Stadfastness or Steadfastness: How To spell?

The word Stadfastness is misspelled against Steadfastness, a noun meaning "The quality or state of being steadfast; firmness; fixedness; constancy."

Steadfastness has vowels 'ea' together mispronounced as 'a'
Word contains consecutive vowels 'EA' in between alphabets st & dfastness is misspelled as 'A'
Wrong Spelling:  st-a-dfastness 
Correct Spelling:  st-ea-dfastness 
Explore spell check of Steadfastness to spell without errors.

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