The term commissioner for oath refers to a person who can administer oaths and affirmations in a legal context. There are several synonyms for this term, including notary public, notary, public notary, or notarial officer. These individuals are typically appointed by the government to witness and certify important legal documents, such as contracts, wills, and deeds. In addition to administering oaths, commissioners for oath may also perform other duties, such as verifying identities, certifying copies of documents, and acknowledging signatures. Regardless of the specific title, these individuals play a critical role in ensuring the validity and legality of important legal transactions.