What should be used instead of the word "sworn" when a witness prefers to affirm?

When a witness chooses to affirm rather than swear an oath, the term "affirmed" is appropriately used. This is a formal declaration made by an individual asserting the truth of their testimony without invoking a religious connotation that often accompanies an oath. The process acknowledges the witness's commitment to tell the truth while respecting personal beliefs that may prevent them from swearing.

In legal contexts, it's essential to use specific language to maintain clarity and formality. "Affirmed" directly reflects the action taken by the witness, making it an accurate choice in this scenario. The use of terms like "confirmed," "accepted," or "testified" does not convey the specific action of an affirmation and therefore does not fit the context of the question appropriately.