/oʊθ/ – Noun
Definition: lời tuyên thệ, việc tuyên thệ.
A more thorough explanation: An oath is a solemn declaration or promise, often made under oath, to tell the truth or to fulfill a duty, typically invoking a deity or a sacred object as a witness to the binding nature of the commitment. It is a formal and legally binding pledge that carries consequences for perjury if violated.
Example: I swear to tell the truth, the whole truth, and nothing but the truth, so help me God.