The phrase "sign papers" can be used to describe a variety of tasks related to documentation and legalities. Some common synonyms for this phrase include "execute documents," "affix signature," "endorse forms," "validate paperwork," and "sign off on agreements." Each of these expressions conveys the action of adding one's signature to a set of documents in order to indicate approval or authorization. In some cases, it may be necessary to sign papers in the presence of witnesses or notaries. No matter what phrasing is used, signing papers is an important part of many important transactions, from purchasing a home to establishing a legally binding contract.