Synonyms for fault

noun

• a wrong action attributable to bad judgment or ignorance or inattention
• an imperfection in an object or machine
• the quality of being inadequate or falling short of perfection
• (geology) a crack in the earth's crust resulting from the displacement of one side with respect to the other
• (electronics) equipment failure attributable to some defect in a circuit (loose connection or insulation failure or short circuit etc.)
• responsibility for a bad situation or event
• (sports) a serve that is illegal (e.g., that lands outside the prescribed area)

verb

• put or pin the blame on