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Synonyms

headfirst

American  
[hed-furst] / ˈhɛdˈfɜrst /

adverb

  1. with the head or heads in front or bent forward; headforemost.

    He dived headfirst into the sea.

  2. rashly; precipitately.


headfirst British  
/ ˈhɛdˈfɜːst /

adjective

  1. with the head foremost; headlong

    he fell headfirst

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

adverb

  1. rashly or carelessly

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of headfirst

First recorded in 1820–30; head + first

Explanation

When you do something headfirst, your head leads the way. For example, a boy might show off by diving headfirst into a chilly lake. The adverb headfirst is useful for describing a dive or a movement that leads with the head. A stormy ocean might fling a swimmer headfirst onto the beach, or an unlucky skier could slide headfirst down a mountain. You can also use headfirst in a more figurative way, to describe something that's done impulsively, or in a foolishly hasty manner: "He plunged headfirst into this new relationship two days after breaking up with his girlfriend."

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Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

But many species of kingfishers dive headfirst into water to catch their fishy prey.

From Science Daily • Oct. 24, 2023

“When something opens up in front of you that you love, you dive headfirst into it,” he said.

From New York Times • Jun. 27, 2023

It would probably take a major cultural shift for bigger entertainment firms to dive headfirst into that world.

From Los Angeles Times • Jun. 15, 2023

But the puck got away from him a bit as he neared Penguins goaltender Tristan Jarry, so Oshie decided there was only one thing to do — dive headfirst.

From Washington Post • Mar. 10, 2021

She stops and stares as I close my eyes and dive headfirst into the hill of muck, hoping it'll keep me safe.

From "Born Behind Bars" by Padma Venkatraman

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