megalomaniac Syllabification: (meg·a·lo·ma·ni·ac)Pronunciation: /ˌmegəlōˈmānēˌak/Translate megalomaniac | into French | into Italian | into Spanish Definition of megalomaniac noun a person who is obsessed with their own power. a person who suffers delusions of their own power or importance. adjective exhibiting megalomania. Derivatives megalomaniacalPronunciation: /-məˈnīəkəl/ adjective megalomaniac in other Oxford dictionaries Definition of megalomaniac in the British & World English dictionary
