Read the dictionary definition of headlong. All definitions for this word.
1. with the head foremost
1. a headfirst plunge down the stairs
2. a headlong dive into the pool
2. excessively quick
1. made a hasty exit
2. a headlong rush to sell
3. with the head foremost
1. the runner slid headlong into third base
4. in a hasty and foolhardy manner
1. he fell headlong in love with his cousin
5. at breakneck speed
1. burst headlong through the gate