Akademik

head-to-head
I
adjective
1. involving two persons; intimately private
-

a tete-a-tete supper

-

a head-to-head conversation

Syn: ↑tete-a-tete
Similar to: ↑private
Derivationally related forms: ↑tete-a-tete (for: ↑tete-a-tete)
2. inconclusive as to outcome; close or just even in a race or comparison or competition
-

as they approached the finish line they were neck and neck

-

the election was a nip and tuck affair

Syn: ↑neck and neck, ↑nip and tuck
Similar to: ↑inconclusive
II
adverb
even or close in a race or competition or comparison
-

the horses ran neck and neck

-

he won nip and tuck

Syn: ↑neck and neck, ↑nip and tuck
Derived from adjective: ↑nip and tuck (for: ↑nip and tuck), ↑neck and neck (for: ↑neck and neck)

Useful english dictionary. 2012.