Lia [lia]â² as a girls' name is pronounced LEE-ah. It is of Latin origin. Short form of names like Amelia, Rosalia, and Evangelia bringer of the gospel. Used as an independent name in Italy. See also Lea and Leah. Writer Lia Matera.
Testify(verb) to make a solemn declaration under oath or affirmation, for the purpose of establishing, or making proof of, some fact to a court; to give testimony in a cause depending before a tribunal. Testify(verb) to declare a charge; to protest; to give information; to bear witness; -- with against.
To testify means to serve as a witness in court, or to declare the truth of something. When you go to court and tell the jury that you saw the defendant robbing the store, this is an example of a time when you testify.