Underfunding Posted on 24th December 20153rd May 2021 by ThePD (The Project Definition) Underfunding is a situation in which the value of a plan’s asset or funding money is less than its liabilities. 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 Business and tagged commercial. 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.