man-to-man

 Longman Dictionary of Contemporary English 5++朗文当代英语 5++LDOCE 5++朗文 5++ˌman-to-ˈman adjective [only before noun] informal  1. TALK TO somebodyif two men have a man-to-man talk, they discuss something in an honest direct way 〔两个男人之间〕坦诚的，开诚布公的2. playing a sport in such a way that one person on your team tries to stay close to one person on the other team 〔球赛中〕人盯人的 —man-to-man adverb You two need to discuss this man-to-man. 你们两个人需要坦率地讨论一下这个问题。

Examples from the Corpus

man-to-man• So I strode up there to have this man-to-man chat with Nick.• man-to-man defense• Blue said the team is exciting to watch, in part, because they play man-to-man defense.• From what I could see Fairclough played as a form of sweeper with a man-to-man job in Wegerle.• It's always man-to-man stuff with them.• In 1959, at their man-to-man talks at Camp David, Eisenhower and Khrushchev admitted this to each other.

ˌman-to-ˈman adjectiveChineseSyllable  

Corpus if two a man-to-man men have talk,

man-to-man
ˌman-to-ˈman adjective [only before noun] informal
1. if two men have a man-to-man talk, they discuss something in an honest direct way
2. playing a sport in such a way that one person on your team tries to stay close to one person on the other team
—man-to-man adverb:
    You two need to discuss this man-to-man.