Downright and Upfront

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

Upfront and downright are semantically related. in blunt topic. In some cases you can use "Upfront" instead an adjective "Downright", when it comes to topics like straight from the shoulder. informal substitute

Upfront adjective - Frank and honest.

Downright and upfront are semantically related. Sometimes you can use "Downright" instead an adjective "Upfront".