Viva Voce Evidence Posted on 26th December 20151st May 2021 by ThePD (The Project Definition) Viva Voce Evidence is given orally to a court by a witness as opposed to evidence given in writing. Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)Click to share on LinkedIn (Opens in new window) Related Posted in General and tagged legal. ThePD (The Project Definition) ThePD has been developing the Preferred Project Definitions based on the actual project execution and operation experiences and knowledge with the Project Language, and sharing with you daily basis.