noun a wrong action attributable to bad judgment or ignorance or inattention.
— synonyms: mistake, error
noun an imperfection in an object or machine.
— synonyms: defect, flaw
noun the quality of being inadequate or falling short of perfection.
— synonyms: demerit
noun (geology) a crack in the earth's crust resulting from the displacement of one side with respect to the other.
— synonyms: faulting, geological_fault, shift, fracture, break
noun (electronics) equipment failure attributable to some defect in a circuit (loose connection or insulation failure or short circuit etc.).
noun responsibility for a bad situation or event.
noun (sports) a serve that is illegal (e.g., that lands outside the prescribed area).
Examples
“No! This is my fault, not yours.”
“For all her faults, she’s a good person at heart.”