Synonyms of head to head

Adjective

1. tete-a-tete, head-to-head, private (vs. public)

usage: involving two persons; intimately private; "a tete-a-tete supper"; "a head-to-head conversation"

2. neck and neck, head-to-head, nip and tuck, inconclusive (vs. conclusive)

usage: 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"

Adverb

1. neck and neck, head-to-head, nip and tuck

usage: even or close in a race or competition or comparison; "the horses ran neck and neck"; "he won nip and tuck"