ˌhead-ˈon adverb

1. crash/collide/smash etc head-on if two vehicles crash etc head-on, the front part of one vehicle hits the front part of the other

2. if someone deals with a problem head-on, they do not try to avoid it, but deal with it in a direct and determined way
face/tackle/meet something head-on
The police are trying to tackle car crime head-on.

3. if two people or teams meet head-on in an argument, competition etc, they compete against each other and try to win in a very determined way
—head-on adjective:
a head-on collision

[TahlilGaran] Dictionary of Contemporary English ▲

head-on
1. in a way that is exactly opposite, opposed to someone in an argument or fight
They decided to deal with their opponents in a head-on manner in order to win the fight.

2. with the head or front pointing at something, with the front facing something
There was a head-on car crash last night near our house.

3. front end to front end, with the front facing something
There was a serious head-on crash on the highway last night.

[TahlilGaran] English Idioms Dictionary ▲

head on
adj. or adv. phr.
1. With the head or front pointing at; with the front facing; front end to front end.
Our car skidded into a head-on crash with the truck.
In the fog the boat ran head-on into a log.
There is a head-on view of the parade from our house.
Compare: FACE-TO-FACE.
Antonym: REAR-END.
2. In a way that is exactly opposite; against or opposed to in argument.
If you think a rule should be changed, a head-on attack against it is best.
Tom did not want to argue head-on what the teacher said, so he said nothing.

[TahlilGaran] English Idioms Dictionary ▲