calenture

force heat light

ardor brio dash drive eagerness energy enthusiasm excitement exhilaration fervency fervor ginger gusto heartiness impetuosity intensity life liveliness luster passion pep punch radiance scintillation snap sparkle spirit splendor starch verve vim virtuosity vivacity zeal zing zip

red heat white heat élan

apathy calm calmness coldness coolness discouragement dullness idleness inactivity indifference laziness lethargy lifelessness unenthusiasm

spiritlessness