1. (n.) Inspiration as if by a divine or superhuman power; ecstasy; hence, a conceit of divine possession and revelation, or of being directly subject to some divine impulse.

2. (n.) A state of impassioned emotion; transport; elevation of fancy; exaltation of soul; as, the poetry of enthusiasm.

3. (n.) Enkindled and kindling fervor of soul; strong excitement of feeling on behalf of a cause or a subject; ardent and imaginative zeal or interest; as, he engaged in his profession with enthusiasm.

4. (n.) Lively manifestation of joy or zeal.

acquiescence activity agreeability agreeableness alacrity amenability amusement animation ardency ardor avidity brio briskness bug calenture cathexis cheerful consent compliance concern concernment consent cooperativeness craze crazy fancy curiosity devotedness devotion diversion docility eagerness earnest earnestness ebullience elan enthusiasticalness excitement exuberance fad fanaticism fascination favorable disposition favorableness fervency fervor fieriness fire forwardness furor furore gameness glow goodwill gusto hobby hurrah impassionedness impetuosity impetus infatuation interest joie de vivre keenness life liveliness lustiness mania manic-depressive psychosis matter of interest mettle passion pastime perkiness pertness pliability pliancy promptness rage readiness receptive mood receptiveness receptivity relish responsiveness right mood robustness special interest spirit spiritedness tractability ungrudgingness unloathness unreluctance vehemence vivacity warmth willing ear willing heart willingness zeal zealousness zest zestfulness zing