The phrase "throw in dungeon" implies the act of imprisoning someone in a dark and isolated place. Some possible antonyms for this phrase could include "release," "free," "liberate," "rescue," or "emancipate." These words signify the opposite of imprisoning, indicating that someone is being set free from confinement. Other antonyms might include "allow," "permit," "authorize," or "grant," which suggest a person is being given permission or a right to act freely. Finally, "exile," "banish," or "expel" could also be considered antonyms as they denote the act of sending someone away from a particular place or society, but they do not necessarily imply confinement or imprisonment.