head·​first | \ ˈhed-ˈfərst How to pronounce headfirst (audio) \

Definition of headfirst

1 : with the head foremost dove headfirst into the waves

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Other Words from headfirst

headfirst adjective

Examples of headfirst in a Sentence

She dove into the water headfirst. She rushed into the relationship headfirst.
Recent Examples on the Web Throw yourself headfirst into your college classes; try new hobbies; get out there and meet new people. cleveland, "Dear Annie: Pining for the one who got away," 30 May 2020 Nuthatches, by contrast, apparently immune to vertigo, climb headfirst down a tree. John Gurda, Milwaukee Journal Sentinel, "A balm for coronavirus anxiety: Milwaukee's wild places, where the rhythms of nature are steady as ever," 30 Apr. 2020 Writing in The Sports Examiner, Rich Perelman speculated those dates could run headfirst into pollen allergies that tend to flare in the south end of the Willamette Valley at that time of the year. oregonlive, "Fairly tale conclusion to Ella Donaghu’s collegiate career gets put on hold: Oregon track & field rundown," 7 Apr. 2020 Her favorite game is leaping headfirst from the laundry onto the hardwood. Leslie Jamison, The New York Review of Books, "‘Since I Became Symptomatic’," 26 Mar. 2020 Contrast that success with countries such as Germany, which dove headfirst into renewables with a $580 billion investment, but still saw an increase in per capita emissions. Dan Crenshaw, National Review, "It’s Time for Conservatives to Own the Climate-Change Issue," 3 Mar. 2020 Every year, a crowd of brave, bedecked daredevils lines up along the ocean shore in Virginia Beach, and charges headfirst into the frigid winter waters. Aj Willingham, CNN, "Valentine's stories that will make you believe in love," 15 Feb. 2020 Watching Hulu’s latest science fiction drama, Utopia Falls, feels like tripping headfirst into the young adult shelf at your local bookstore. Emma Grey Ellis, Wired, "Utopia Falls Is a Bold Attempt to Make a Better YA Dystopia," 13 Feb. 2020 In the second quarter of Boston’s loss to the Nuggets, Walker crashed headfirst into Ojeleye’s midsection while chasing a loose ball. BostonGlobe.com, "his scary collision with Semi Ojeleye last Friday," 27 Nov. 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'headfirst.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of headfirst

1790, in the meaning defined at sense 1

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Time Traveler for headfirst

Time Traveler

The first known use of headfirst was in 1790

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Cite this Entry

“Headfirst.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/headfirst. Accessed 2 Mar. 2021.

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More Definitions for headfirst



English Language Learners Definition of headfirst

: with the head leading
: without taking time to think about your actions


head·​first | \ ˈhed-ˈfərst How to pronounce headfirst (audio) \

Kids Definition of headfirst

: with the head in front He fell headfirst down the stairs.

More from Merriam-Webster on headfirst

Thesaurus: All synonyms and antonyms for headfirst

Nglish: Translation of headfirst for Spanish Speakers

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