"headlong" in the adjective sense

1. hasty, headlong

excessively quick

"made a hasty exit"

"a headlong rush to sell"

2. headfirst, headlong

with the head foremost

"a headfirst plunge down the stairs"

"a headlong dive into the pool"

"headlong" in the adverb sense

1. headlong, headfirst

with the head foremost

"the runner slid headlong into third base"

2. headlong, precipitately

at breakneck speed

"burst headlong through the gate"

3. headlong, rashly

in a hasty and foolhardy manner

"he fell headlong in love with his cousin"

Source: WordNet® (An amazing lexical database of English)

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