- 1in which the front part of one vehicle hits the front part of another vehicle a head-on crash/collision
- 2in which people express strong views and deal with something in a direct way There was a head-on confrontation between management and unions.
[only before noun]
The cars crashed head-on. We hit the tree head-on. to tackle a problem head-on (= without trying to avoid it)
head-on adverbjump to other results