a.
1.
Warm, ardent, earnest, vehement, excited, animated, fiery, enthusiastic, fervent, glowing, burning, zealous, violent, furious, impetuous, impulsive, impassioned.
2.
Irascible, excitable, choleric, hasty, impatient, touchy, hot, peppery, hot-tempered, angry, quick-tampered, hot-headed, fiery, violent.