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."

Definitions of headfirst
  1. adjective
    with the head foremost
    “a headfirst plunge down the stairs”
    synonyms: headlong
    at or near or directed toward the front
  2. adverb
    with the head foremost
    synonyms: headlong
Word Family
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