weaknessPronunciation: /ˈwiːknɪs/Translate weakness | into French | into German | into Italian | into Spanish Definition of weakness noun 1 [mass noun] the state or condition of being weak:the country’s weakness in international dealings 2a disadvantage or fault:you must recognize your product’s strengths and weaknesses 3a person or thing that one is unable to resist or likes excessively:you’re his one weakness—he should never have met you (weakness for) a self-indulgent liking for:his weakness for prawn cocktailsweakness in other Oxford dictionaries Definition of weakness in the US English dictionary