headlong

adverb

1 he fell headlong into the tent:

head foremost, head first, on one's head;

diving.

▷antonyms feet first.

2 those who rush headlong to join in the latest craze:

without thinking, without forethought, precipitately, precipitously, impetuously, rashly, recklessly, carelessly, heedlessly, hastily, in haste, head first, head over heels.

▷antonyms cautiously.

adjective

a headlong dash through the house:

breakneck, whirlwind;

reckless, precipitate, precipitous, rash, impetuous, hasty, careless, heedless.

▷antonyms cautious.

choose the right word	headlong, impetuous, impulsive, precipitate
See impetuous.