megalomaniacal

/ˌmɛɡəloʊməˈnaɪəkəl/
adjective
  1. Relating to or characteristic of megalomania; showing an exaggerated sense of power, importance, or ambition.
    • Her megalomaniacal behavior alienated even her closest friends.
    • The architect's megalomaniacal design for the tower was impractical and expensive.
    • The ruler's megalomaniacal speeches convinced no one but himself.
Antonyms
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