| eruptive(unstable, unpredictable, volatile) |
| exciting(adjective, moving, energetic, lively, animated) |
| exhilarated(adjective, excited) |
| faithful(adjective, keen, passionate, enthusiastic, fervent) |
| feisty(adjective, energetic, determined, spirited, forceful) |
| feverous(warm, heated, burning, white, red) |
| fired up(expression, adjective, intense, passionate, excited) |
| flashing(adjective, bright, hot, white, glowing) |
| flickering(adjective, passionate, fire, burning, glowing) |
| frisky(adjective, lively, vigorous, spirited, courageous) |
| full-blooded(adjective, vigorous) |
| galled(mad, heated, annoyed, furious, irritated) |
| gushing |
| headlong(adjective, strong, difficult, intense, violent) |
| headstrong(adjective, passionate, careless, cruel, crazy) |
| hectic(animated, frenzied, impassioned) |
| histrionic(adjective, moving, emotional, touching, exciting) |
| huffy(adjective, difficult, cross, mad, irritable) |
| hysterical(adjective, upset, moving, passionate, excited) |
| in a fever(expression, idiom, heat) |