1. (noun)demerit a mark against a person for misconduct or failure; usually given in school or armed forces Synonyms: fault Antonyms: virtue, merit
2. (noun)demerit, fault the quality of being inadequate or falling short of perfection Synonyms: fracture, shift, mistake, defect, error, fault, break, demerit, flaw, geological fault, faulting Antonyms: merit, virtue