Downright and Forthright

Downright adjective - Being or characterized by direct, brief, and potentially rude speech or manner.

Forthright is a synonym for downright in clear topic. In some cases you can use "Forthright" instead an adjective "Downright", when it comes to topics like blunt, frank.

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

Downright is a synonym for forthright in clear topic. You can use "Downright" instead an adjective "Forthright", if it concerns topics such as frank, outspoken.