Meaning & Definition
adverb
with the head in front or leading; diving or moving in a forward direction with the head leading.
She jumped headfirst into the pool, excited to cool off on a hot day.
in a hasty or reckless manner.
He dived headfirst into the project without considering the potential risks.
in a way that shows impulsiveness or lack of preparation.
They went headfirst into the business without having a solid plan.
Etymology
The term combines 'head' and 'first', indicating the head leading in movement.
Common Phrases and Expressions
headfirst dive:
A dive in which the diver enters the water headfirst.
go in headfirst:
To engage in an activity with enthusiasm and without hesitation.
Slang Meanings
To take a risk without thinking.
He went headfirst into a new business venture.
To act impulsively.
She fell headfirst for him.