The word Plataeux is misspelled against Plateaux, which is plural of "Plateau"
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Plateaux has vowels 'ea' together mispronounced as 'ae'
Word contains consecutive vowels 'EA' in between alphabets plat & ux is misspelled as 'AE'
Wrong Spelling:  plat-ae-ux 
Correct Spelling:  plat-ea-ux 
Check more misspelled words of Plateaux to spell it correct.