adj, adv ·2 syllables ·Uncommon ·Advanced level

Definitions

Adjective

1. 1
   With the head in front; headlong. not-comparable

Adjective

1. 1
   with the head foremost wordnet

Adverb

1. 1
   With the head in front; headlong. not-comparable
2. 2
   Rashly; precipitately; without deliberation; hastily. not-comparable

   "Sheffield was not going to stop being Sheffield just because he had dived headfirst into the lusts of the flesh."

Adverb

1. 1
   with the head before the body wordnet

Synonyms

All synonyms

headforemosta corps perduabruptlycarelesslydesperatelyforward

Antonyms

All antonyms

feet firsttailfirst

Example

More examples

"Plunge the lobsters headfirst into a pot of boiling water."

Etymology

From head + first.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.