Headfirst in a sentence as an adjective

For every clueless MBA "idea guy" leaping headfirst into the tech world and flailing around like an idiot, there are plenty of newly minted MBAs entering the field and doing just fine for the companies that hire them.

Headfirst definitions

adjective

with the head foremost; "a headfirst plunge down the stairs"; "a headlong dive into the pool"

See also: headlong

adverb

with the head foremost; "the runner slid headlong into third base"

See also: headlong