headlong

Từ điển American Heritage Dictionary 4th

head·long (hĕdʹlôngʹ, -lŏngʹ)adv.
1. With the head leading; headfirst:
The runner slid headlong into third base.
2. In an impetuous manner; rashly.
3. At breakneck speed or with uncontrolled force.adj. (hĕdʹlông', -lŏng')
1. Done with the head leading; headfirst:
a headlong dive.
2. Impetuous; rash. See Synonyms at impetuous.
3. Uncontrollably forceful or fast.
4. Archaic. Steep; sheer. [From Middle English (bi) hedlong, alteration of (bi) hedling: hed, head; see head + -ling, in a specified direction; see -ling².]

• Từ đồng nghĩa / Synonyms:
  headfirst, hasty, rashly, precipitately