There are several synonyms for the phrase "got off a technicality" that can be used when describing a situation where someone has avoided punishment or responsibility due to a legal loophole or technicality. These include "escaped on a technicality," "got away with it," "avoided justice," "dodged a bullet," and "slipped through the cracks." Other related phrases include "found a loophole," "exploited an ambiguity," and "milked a gray area." Regardless of the specific wording used, all of these phrases convey a sense of frustration or dismay that justice has not been properly served, and that someone has gotten off without facing the consequences of their actions.