Allege Posted on 1st November 20158th May 2023 by ThePD (The Project Definition) Allege means to claim or assert that someone has done something illegal without proof. 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.