affection love fondness devotion attachment passion eagerness keenness fervour ardor ardour enthusiasm fervor avidity fervency vigour zeal ardency verve vigor fanaticism zest warmth vehemence spirit gusto intensity appetite fire earnestness energy relish zealousness readiness passionateness fixation dedication monomania partiality fandom infatuation bias overenthusiasm madness excitement exuberance vivacity vivaciousness liveliness interest sap dynamism brio willingness conviction feeling ebullience motivation wholeheartedness oomph pep vim thirst emotion lust commitment life zing gaiety fever rapture mirth intenseness hunger dash heat ecstasy go exhilaration impatience flare joyfulness impetuosity zip zap activity fury fieriness élan glow joy frenzy flame drive inclination determination taste yen enterprise initiative