We found 13 dictionaries that define the word head first:

General (8 matching dictionaries)

1. head first: Oxford Learner's Dictionaries
2. head-first: Wordnik
3. head-first, head first: Wiktionary
4. Head First (Badfinger album), Head First (Goldfrapp album), Head First (The Babys album), Head First (Uriah Heep album), Head First (book series), Head First (film), Head First, Head-first: Wikipedia, the Free Encyclopedia
5. head-first: TheFreeDictionary.com
6. head first: Longman Dictionary of Contemporary English

Business (1 matching dictionary)

7. Head-first: Legal dictionary

Computing (1 matching dictionary)

8. Head-first: Encyclopedia

Medicine (1 matching dictionary)

9. Head-first: Medical dictionary

Miscellaneous (1 matching dictionary)

10. Head-first: Idioms

Slang (1 matching dictionary)

11. head first: Urban Dictionary

Definitions from Wiktionary (head first) ▸ adverb:  With the head first or foremost. Similar: head-first, headfirst, headlong, facefirst, nose-first, head-on, palmwise, headstrongly, headlongly, tailwise, more... Opposite: feet first, backwards, tail first Phrases: go in head first, dove head first, more... ▸ Words similar to head first ▸ Usage examples for head first ▸ Idioms related to head first ▸ Wikipedia articles (New!) ▸ Words that often appear near head first ▸ Rhymes of head first ▸ Invented words related to head first