A bad mark is an indication of a negative event or experience. The crossword solutions for the term 'bad mark' include 'STIGMA' (6 letters), 'STAIN' (5 letters), 'ZIT' (3 letters), 'DEMERIT' (7 letters), 'SMEAR' (5 letters), 'SCAR' (4 letters), 'BLOT' (4 letters), 'dee' (3 letters), 'dplus' (5 letters), and 'black eye' (8 letters). All of these words are associated with something negative, and can be used to describe a bad mark.