head-to-head >> ˌhɛdtəˈhɛd
Definition: [adjective] involving two parties confronting each other.
Example: a head-to-head battle with bureaucracy
Definition: [adverb] with two parties confronting each other.
Example: it was a good feeling to be able to compete against other people and go head-to-head
Definition: [noun] a conversation, confrontation, or contest between two parties.
Example: yet another head-to-head about the threatened railway