英日字典: head-to-head
    The head-to-head has 3 Senses.
-  head-to-head, neck and neck, nip and tuck
-  負けず劣らず
- even or close in a race or competition or comparison; "the horses ran neck and neck"; "he won nip and tuck"
- レース、競争または比較で同等であるか、または近い
-  head-to-head, tete-a-tete
-  ちょぼちょぼ
- involving two persons; intimately private; "a tete-a-tete supper"; "a head-to-head conversation"
- 2人にかかわる
-  head-to-head, neck and neck, nip and tuck
-  負けず劣らず
- 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"
- 結果に関して確定的でない