"Holds a gun to one's head" is a phrase used to describe a situation where someone is forcibly threatening another person with a weapon. Some synonyms for this phrase could include "pointing a gun at someone," "placing a firearm against someone's temple," or "making someone the target of a loaded gun." Other phrases that could be used to describe a similar situation might include "holding someone at gunpoint," "threatening someone's life," or "forcing someone to comply through intimidation." Regardless of the wording used, the underlying message is clear - this is a dangerous and frightening situation that warrants immediate action to ensure everyone's safety.