weakness

noun

• the state or condition of lacking strength:the country’s weakness in international dealings
• a quality or feature regarded as a disadvantage or fault:you must recognize your product’s strengths and weaknesses
• a person or thing that one is unable to resist or likes excessively:you’re his one weakness—he should never have met you
• [in singular] (weakness for) a self-indulgent liking for:he had a great weakness for Scotch whisky