head-on

adjectives

characterized by direct opposition
"a head-on confrontation"
is similar to
characterized by enmity or ill will
"a hostile nation"; "a hostile remark"; "hostile actions"
meeting front to front
"a frontal attack"; "a head-on collision"

adverbs

in direct opposition; directly
"we must meet the problem head-on"
with the front foremost
"the cars collided head-on"