"demerit" in the noun sense
a mark against a person for misconduct or failure usually given in school or armed forces
"ten demerits and he loses his privileges"
2. demerit, fault
the quality of being inadequate or falling short of perfection
"they discussed the merits and demerits of her novel"
"he knew his own faults much better than she did"
Source: WordNet® (An amazing lexical database of English)
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