megalomaniac
mega|lo|ma|ni|ac /m'egələm'eɪniæk/ (megalomaniacs)
[N-COUNT] oft N n
If you describe someone as a megalomaniac, you are criticizing them because they enjoy being powerful, or because they believe that they are more powerful or important than they really are.
[N-COUNT] oft N n
If you describe someone as a megalomaniac, you are criticizing them because they enjoy being powerful, or because they believe that they are more powerful or important than they really are.