The antonyms of the phrase "committed treason" are loyalty, faithfulness, devotion, and allegiance. Committing treason means to betray one's country or loyalty by engaging in activities that seek to overthrow the government or assist a foreign power. Loyalty, on the other hand, means being faithful and devoted to one's country, its legal and political systems, and its institutions. It is an act of allegiance to the state and its interest, and the opposite of committing treason. Faithfulness and devotion, like loyalty, describe an unwavering commitment to an individual, cause, or institution, while allegiance signifies a sense of duty and dedication to a sovereign or national entity.