The antonyms for the phrase "puts lock on" can vary depending on the context. If we are talking about locks and security measures, the antonyms could be "unlocks," "removes lock," or "opens up." On the other hand, if we are discussing restrictions or limitations, the antonyms could include "opens," "allows access," or "unblocks." In a broader sense, the antonyms for "puts lock on" could be interpreted as freedom, release, or liberation. It is important to consider the context and meaning of the phrase to choose the most appropriate antonym.