1. (adjective) excessively quick

• hasty

2. (adjective) with the head foremost

• headfirst

3. (adverb) with the head foremost

• headfirst

4. (adverb) at breakneck speed

• precipitately

5. (adverb) in a hasty and foolhardy manner

• rashly

1. (adjective) excessively quick

• hurried

2. (adjective) with the head foremost

• forward

1. (adjective) excessively quick

• haste
• hastiness
• hurriedness
• hurry
• precipitation
• hastiness

1. (adverb) at breakneck speed

• hasty
• hasty
• overhasty
• precipitant
• precipitate
• precipitous

2. (adverb) in a hasty and foolhardy manner

• rash