enthusiasm (n.)
- acquiescence
- activity
- agreeability
- agreeableness
- alacrity
- amenability
- amusement
- animation
- ardor
- avidity
- brio
- briskness
- bug
- cathexis
- compliance
- concern
- consent
- cooperativeness
- craze
- curiosity
- devotedness
- devotion
- diversion
- docility
- eagerness
- earnest
- earnestness
- ebullience
- elan
- excitement
- exuberance
- fad
- fanaticism
- fascination
- favorableness
- fervency
- fervor
- fieriness
- fire
- forwardness
- furor
- furore
- gameness
- glow
- goodwill
- gusto
- hobby
- hurrah
- impetuosity
- impetus
- infatuation
- interest
- keenness
- life
- liveliness
- lustiness
- mania
- mettle
- passion
- pastime
- perkiness
- pertness
- pliability
- pliancy
- promptness
- rage
- readiness
- receptiveness
- receptivity
- relish
- responsiveness
- robustness
- spirit
- spiritedness
- tractability
- vehemence
- vivacity
- warmth
- willingness
- zeal
- zest
- zestfulness
- zing
Nothing great was ever achieved without enthusiasm.
