Set at liberty means to release or free someone from custody or restraint. There are many other synonyms that can be used in place of set at liberty, such as release, set free, let go, liberate, emancipate, discharge, pardon, acquit, exonerate, absolve, clear, reprieve, spare, forgive and let out. These words often carry similar connotations, and can be used interchangeably in many contexts. For example, a prisoner might be set at liberty after serving their sentence, or a bird might be released from a cage and set free to fly. No matter the context, each synonym for set at liberty carries the same essential meaning of freedom and release.