A more thorough explanation:

MAINAD

Mainad (may-nəd) is a historical term that comes from the Saxon word "manath," which means "a deceitful oath." It refers to the act of perjury, or lying under oath.

An example of mainad would be if a witness in court swore to tell the truth, but then deliberately lied to protect someone or something. Another example would be if someone made a false promise while swearing on a religious text.

These examples illustrate the definition of mainad because they both involve intentionally breaking an oath or promise while under the obligation to tell the truth. This kind of deceitful behavior was considered a serious offense in historical times and was often punished severely.