M0079700 (mə-nī′ə-kəl) also ma·ni·ac(mā′nē-ăk′)adj.1. Suggestive of or afflicted with extreme mental derangement: a maniacal frenzy.2. Characterized by excessive enthusiasm or excitement: a maniacal interest in gambling.3. Wildly irresponsible: maniacal drivers.ma·ni′a·cal·ly adv.Thesaurus
Adv.
1.
maniacally - in a maniacal manner or to a maniacal degree; "he was maniacally obsessed with jealousy"