The word Iduman is misspelled against Idumean, a noun meaning "An inhabitant of Idumea, an Edomite."
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Idumean has vowels 'ea' together mispronounced as 'a'
Word contains consecutive vowels 'EA' in between alphabets idum & n is misspelled as 'A'
Wrong Spelling:  idum-a-n 
Correct Spelling:  idum-ea-n 
Check more misspelled words of Idumean to spell it correct.