treasonous
- s having the character of, or characteristic of, a traitor
- Wrongly identifying him as "Israel Thonstein," a Jew passing for a gentile, the FBI found no evidence that he had ever belonged to the Communist Party or engaged in treasonous .
- And with that, the demonstrators were officially branded "counter-revolutionary," a treasonous label, and the stage was set for the massacre that would ensue six weeks later.
- In recent weeks, Kremlin-controlled media have berated the Agreement as a treasonous act by Shervardnadze (who later became the pro-NATO President of Georgia).