Forthright and Man-to-man

Forthright adjective - Free in expressing one's true feelings and opinions.

Man-to-man and forthright are semantically related in clear topic. In some cases you can use "Man-to-man" instead an adjective "Forthright".

Man-to-man adjective - Forthright and honest.

Forthright and man-to-man are semantically related in clear topic. You can use "Forthright" instead an adjective phrase "Man-to-man", if it concerns topics such as frank.