| have cold feet(expression, idiom, passionate, inflamed, rutilous) |
| hazard(noun, trouble, danger) |
| hazardous(adjective, delicate, uncertain, doubtful, tricky) |
| headstrong(adjective, bold, rash, reckless, risky) |
| hopped up(expression, passionate, excited, inflamed, interested) |
| hot(passionate, inflamed, rutilous) |
| hot-and-bothered(overwrought, worked-up, keyed-up) |
| hot-blooded(passionate, inflamed, rutilous) |
| hot and bothered(expression, idiom, passionate, inflamed, rutilous) |
| hot shot(expression, adjective, smart, impulsive, susceptible) |
| hot under collar(expression, idiom, overwrought, worked-up, keyed-up) |
| hotblooded(passionate, excited, inflamed, interested, overwrought) |
| hyper(overwrought, worked-up, keyed-up) |
| iffy(adjective, delicate, uncertain, doubtful, tricky) |
| impetuous(adjective, bold, rash, reckless, risky) |
| impressed(adjective, easy, passionate, ready, affected) |
| impressible(adjective, easy, ready, affected, responsive) |
| impressionable(adjective, easy, ready, affected, responsive) |
| imprudent(adjective, bold, rash, reckless, risky) |
| impudent(adjective, smart, impulsive, courageous) |