headfirst

[ hed-furst ]
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adverb
  1. with the head in front or bent forward; headforemost: He dived headfirst into the sea.

  2. rashly; precipitately.

Origin of headfirst

1
First recorded in 1820–30; head + first

Words Nearby headfirst

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use headfirst in a sentence

British Dictionary definitions for headfirst

headfirst

/ (ˈhɛdˈfɜːst) /


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

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