Demented
Part of speech: adjective
Definition: insane or mentally ill suffering from dementia
Example sentence: 'Raman Raghav' will break my image of cute boy-next-door. My character in the film is mad, demented, very aggressive. He is a good cop but has his own issues.
Crazy
Part of speech: adjective
Definition: insane, dementedout of controloverly excited or enthusiasticfilled with foolish or unreasoned affection
Part of speech: adverb
Definition: Very, extremely.
Part of speech: noun
Definition: an insane or eccentric person; a crackpot
Example sentence: I think the biggest misconception about me is people really don't know who I really am. They see the party side of me, they see the crazy side of me. But I also have a laid-back side. You know, I'm chill, down to earth. If you want to grab a cup of coffee and just talk about life, I can do that.