鲁莽

rash; reckless; impetuous; hasty; precipitate; impulsive; hot-headed; forward; incautious; imprudent; bold; impertinent; abrupt; recklessness; forwardness; nerve; temerity; rashly; recklessly; impetuously; headfirst

冒险

take a risk; risk; risk it; venture; hazard; gamble; take a chance; take chances; run a risk; throw caution to the wind; play with fire; adventure; chance; risk-taking; escapade; risky; adventurous; venturesome; hazardous