head on
Also found in: Wikipedia.
head-on
1. Directly; without hesitation. I'm nervous about having to make a presentation to the entire board, but it is a challenge I will meet head-on.
2. With the front or head facing forward. It was a head-on collision—that's why my windshield is cracked.
head on
directly; head to head. I think we need to face this threat head on. Let's be proactive not reactive!
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.