Demerit

Definition:

(n.) That which one merits or deserves, either of good or ill; desert.
(n.) That which deserves blame; ill desert; a fault; a vice; misconduct; -- the opposite of merit.
(n.) The state of one who deserves ill.
(n.) To deserve; -- said in reference to both praise and blame.
(n.) To depreciate or cry down.
(v. i.) To deserve praise or blame.

Compare demerit with other words:

demerit vs. disvalue