The definition of allegiance means giving a promise to be loyal, or the action of actually being loyal and on someone's side.
applies to anything regarded by a government as stirring up resistance or rebellion against it without being an overt or absolute act of treachery
implies an overt act in violation of the allegiance owed to one's state, specif. a levying war against it or giving aid or comfort to its enemies
Find another word for treason. In this page you can discover 35 synonyms, antonyms, idiomatic expressions, and related words for treason, like: treachery, seditious act, seditionary act, revolt, dishonesty, betrayal, seditiousness, disloyalty, aid and comfort to the enemy, factious revolt and deception.