The word Noumachy is misspelled against Naumachy, a noun meaning "A naval battle; esp., a mock sea fight."
-->
Word contains consecutive vowels 'AU' in between alphabets n & machy is misspelled as 'OU'
Wrong Spelling:  n-ou-machy 
Correct Spelling:  n-au-machy 
Check more misspelled words of Naumachy to spell it correct.