1 [mass noun] the state of being legally responsible for something:once you contact the card protection scheme your liability for any loss ends
[count noun] (usually liabilities) a thing for which someone is responsible, especially an amount of money owed:valuing the company’s liabilities and assets
2 [usually in singular] a person or thing whose presence or behaviour is likely to put one at a disadvantage:she said the party had become a liability to green politics