1. people who give testimony or evidence, especially in a court of law or formal proceeding
Usage: plural of testifier

Examples

• The prosecution called three testifiers to the stand.
• All testifiers were sworn in before giving their statements.
• The defense attorney questioned the credibility of the testifiers.
• Several testifiers provided conflicting accounts of the incident.
• The judge reminded the testifiers to speak only the truth.
• Expert testifiers explained the technical evidence to the jury.