head first
adverb
[ ˌhɛd ˈfəːst ]
• with the head going first or in front of the rest of the body.
• "she dived head first into the water"
Similar:
head foremost,
headlong,
on one's head,
head first
adjective
• (especially of a fall or dive) characterized by the head going first or in front of the rest of the body.
• "he avoided serious injury following a head-first fall on to the ice"
