head-on

[ hed-on, -awn ]
/ ˈhɛdˈɒn, -ˈɔn /

adjective

(of two objects) meeting with the fronts or heads foremost: a head-on collision.
facing the direction of forward motion or alignment; frontal.
characterized by direct opposition: a head-on confrontation.

adverb

with the front or head foremost, especially in a collision: She stepped out of the front door and walked head-on into her husband.

Origin of head-on

An Americanism dating back to 1830–40

British Dictionary definitions for head on

head-on

adverb, adjective

with the front or fronts foremost a head-on collision
with directness or without compromise in his usual head-on fashion

Idioms and Phrases with head on

head on

1

With the face or front first, as in The two bicycles collided head on. [Early 1800s]

2

In direct conflict, in open opposition, as in They decided to meet the opposition head on.