When someone "gat off on a technicality," it means they escape punishment or consequences due to a minor or procedural error in the legal system. Synonyms for this phrase include: loophole, legal trickery, procedural error, technical error, legal loophole, or legal technicality. It is frustrating for victims of a crime or those seeking justice when someone is able to get off on a technicality. However, it highlights the importance of a fair and just legal system that takes into account all aspects of a case and ensures that everyone is treated equally under the law.