deficit

noun

• the amount by which something, especially a sum of money, is too small.
• an excess of expenditure or liabilities over income or assets in a given period:an annual operating deficit [mass noun]:the balance of payments is again in deficit
• (in sport) the amount or score by which a team or individual is losing:a 3-0 deficit
• technical a deficiency or failing, especially in a neurological or psychological function:deficits in speech comprehension