Downright and Wrongheaded

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

Wrongheaded and downright are semantically related In some cases you can replace term "Wrongheaded" with "Downright", this adjectives are similar.

Wrongheaded adjective - Obstinately perverse in judgment or opinion.

Downright and wrongheaded are semantically related in dictatorial topic. Sometimes you can use "Downright" instead an adjective "Wrongheaded".