| 熱血 | [ねっけつ, nekketsu] (n) hot blood; zeal; fervor; fervour; ardor |
| アーダー | [, a-da-] (n) ardor; ardour |
| パッション | [, passhon] (n) (1) passion; ardor; enthusiasm; (2) The Passion (Christianity); (P) |
| 客気 | [かっき, kakki] (n) youthful ardor; rashness |
| 年少客気 | [ねんしょうかっき, nenshoukakki] (n,adj-no) (See 青年客気) youthful ardor; rash impulse of an inexperienced youth |
| 意気込み | [いきごみ, ikigomi] (n) ardor; enthusiasm; (P) |
| 血気 | [けっき, kekki] (n) vigor; ardor; ardour; vigour |
| 青年客気 | [せいねんかっき, seinenkakki] (n,adj-no) (See 年少客気) youthful ardor; rash impulse of an inexperienced youth |