Definition
"Treasonable" describes actions or conduct that constitute treason, a crime against one's country. It involves betraying allegiance by attempting to overthrow the government or harming the state. Think of plotting to assassinate the president or aiding an enemy nation during wartime. The word suggests a severe violation of loyalty and a threat to national security. "Treasonable" acts are punishable by law and carry severe consequences. It's going against the state.