The term POOR MARK can be broken down into two crossword solutions: DEE (3 letters) and DPLUS (5 letters). DEE stands for 'Dismal Performance Evaluation' and is a rating given to an employee who has not met the expectations of their job. DPLUS stands for 'Development Plan' and is a plan created by an employer to help an employee improve their performance. Both of these terms are used to describe an employee who is not performing up to the standards of their job.