Definition of 'maniacal'. maniacal (mÉnaÉªÉkÉl ) If you describe someone's behaviour as maniacal, you mean that it is extreme, violent, or very determined, as if the person were insane. He was almost maniacal in his pursuit of sporting records.
Throughout his career, Clooney has won two Academy Awards, one for Best Supporting Actor for his role in Syriana and one for Best Picture as one of the producers for Argo, as well as a BAFTA and a Golden Globe.
Casey Affleck has won his first-ever Academy Award. The Manchester by the Sea star took home the Oscar for Bestâ¦ Casey Affleck has won his first-ever Academy Award. The Manchester by the Sea star took home the Oscar for Best Actor, winning for his gut-wrenching portrayal of a man tasked with raising his teenage nephew after the death of his brother.