deficit
noun.
the property of being an amount by which something is less than expected or required
new blood vessels bud out from the already dilated vascular bed to make up the nutritional deficit
Synonym: shortage, shortfall
noun.
a deficiency or failure in neurological or mental functioning
the people concerned have a deficit in verbal memory|they have serious linguistic deficits
noun.
(sports) the score by which a team or individual is losing
noun.
an excess of liabilities over assets (usually over a certain period)
last year there was a serious budgetary deficit
Antonym: lead