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.
George Clooney was the man of the party. He was chitchatting with pretty much everyone and seemed to be thoroughly enjoying it, the source added. As for his own leading lady, Amal mingled in the crowd and chatted with gal pal Cindy the most.