Antonyms for the phrase "gave allegiance to" include refused allegiance, rebelled against, opposed loyalty, rejected obedience, and renounced fealty. When someone refuses to give allegiance, they may choose to defy or challenge authority, become a dissenter, or refuse to pledge support. Rebellion against allegiance could stem from a range of reasons, including disagreement with the direction of authority or a lack of trust in its leadership. Likewise, rejecting obedience can indicate a desire for autonomy or a refusal to submit to authority. Finally, renouncing fealty implies that the individual no longer recognizes their obligation to honor or serve a particular governing power.