The word Drednaught is misspelled against Dreadnaught, a noun meaning "A fearless person."
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Dreadnaught has vowels 'ea' together mispronounced as 'e'
Word contains consecutive vowels 'EA' in between alphabets dr & dnaught is misspelled as 'E'
Wrong Spelling:  dr-e-dnaught 
Correct Spelling:  dr-ea-dnaught 
Check more misspelled words of Dreadnaught to spell it correct.