Small Sin, Small weakness in One's character
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Truculence
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Peccadillo
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Foolproof
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Bewilder
B
Correct answer
Explanation
Peccadillo means a minor fault or sin, a small weakness in character. It comes from Spanish and literally means 'little sin.' This matches the definition perfectly. Truculence means aggressive or cruel behavior (unrelated). Foolproof means infallible (unrelated). Bewilder means to confuse or puzzle (unrelated - verb vs noun mismatch).