ma·ni·a·cal 
(mə-nīə-kəl) also ma·ni·ac (mānē-ăk′)
(mə-nīə-kəl) also ma·ni·ac (mānē-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·nia·cal·ly adv.
- extrapyramidal
- extrasensory
- extrasensory perception
- extrasolar
- extrasystole
- extrasystolic
- extraterrestrial
- extraterritorial
- extraterritoriality
- extraterritorially
- extratropical
- extrauterine
- extravagance
- extravagancy
- extravagant
- extravagantly
- extravaganza
- extravagate
- extravasate
- extravasation
- extravascular
- extravehicular activity
- extraversion
- extraversion
- extravert