head-on

Short definition from Wiktionary

Adjective

1. 1
   Direct, abrupt, blunt or unequivocal; not prevaricating.
2. 2
   Of a collision, from the front or in the direction of motion.
3. 3
   Alternative form of head-on.

Adverb

1. 1
   With the front of a vehicle.
2. 2
   With direct confrontation.
3. 3
   Alternative form of head-on.

Noun

1. 1
   A collision from the front.