1. (n.) A state in which the thoughts, expressions, and actions are wild, irregular, and incoherent; mental aberration; a roving or wandering of the mind, -- usually dependent on a fever or some other disease, and so distinguished from mania, or madness.

2. (n.) Strong excitement; wild enthusiasm; madness.

abandon afebrile delirium agnosia apparition ardor block blocking brainchild brainstorm bubble calenture childbed fever chimera continued fever craze deliriousness delusion delusion of persecution disorientation ecstasy eidolon enthusiasm eruptive fever fancy fantasque fantasy febricity febrility fervor fever fever heat feverishness fiction figment fire fire and fury flight of ideas flush frenzy furor furore fury hallucination hallucinosis heat hectic hectic fever hectic flush hyperpyrexia hyperthermia hysteria idle fancy illusion imagery imagination imagining incoherence insubstantial image intermittent fever intoxication invention lingual delirium madness maggot make-believe mental block mental confusion myth nihilism nihilistic delusion orgasm orgy paralogia passion phantasm phantom protein fever psychological block puerperal fever pyrexia rage ranting rapture raving ravishment relapsing fever remittent remittent fever romance sick fancy tearing passion thick-coming fancies towering rage transport trip urethral fever vaccinal fever vapor vision wandering water fever whim whimsy wildest dreams wound fever zeal