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[hed-furst] /ˈhɛdˈfɜrst/
with the head in front or bent forward; headforemost:
He dived headfirst into the sea.
rashly; precipitately.
Origin of headfirst
First recorded in 1820-30; head + first Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for headfirst
Contemporary Examples
Historical Examples
  • The men amidship climbed over the side and went in headfirst.

    The Cruise of the Dry Dock T. S. Stribling
  • Would O'Shea make him drunk, and then cast him headfirst into the swallowing sand?

    The Mermaid

    Lily Dougall
  • And reaching the edge of the swamp, he threw him out into the muddy water, headfirst.

    A Woman at Bay Nicholas Carter
  • Serpents strive to turn their prey and swallow it headfirst.

  • Rick waited until the vinta was on the downward slope of the backwash from the shore, then went in headfirst.

    The Pirates of Shan Harold Leland Goodwin
  • You know, headfirst into the water, from a great height, the problem is to enter the water at the perfect angle.

    The Night-Born Jack London
  • Tom leaned over one of the hogsheads and suddenly let himself go into it headfirst.

  • This unexpected monster was on our starboard bow, and the order to avoid the shoal was putting us headfirst into it.

    A Labrador Doctor

    Wilfred Thomason Grenfell
British Dictionary definitions for headfirst


adjective, adverb
with the head foremost; headlong: he fell headfirst
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
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