General terms:
* Treason: This is the most serious term, typically involving acts of betrayal or aiding an enemy. It often carries legal consequences, including imprisonment or even death.
* Sedition: This refers to inciting rebellion or resistance against the government. It can involve speech, writing, or actions aimed at undermining authority.
* Subversion: This involves undermining the authority or power of a government, often through secret or covert means.
* Disloyalty: This is a broader term that encompasses any act that undermines the interests or values of one's country.
More specific terms:
* Defection: This refers to the act of abandoning one's country to join an opposing side.
* Espionage: This involves spying on behalf of a foreign power, often gathering intelligence and passing it on to the enemy.
* Sabotage: This involves intentionally damaging or disrupting the operations of a government or its institutions.
Other terms:
* Renegade: This refers to someone who has abandoned their country or cause, often joining the enemy.
* Traitor: This is a more informal and often derogatory term for someone who has betrayed their country.
* Turncoat: This refers to someone who changes their allegiance, especially from one side to the other.
The specific word used will depend on the specific context and the severity of the action.