deficit

noun

def·​i·​cit ˈde-fə-sət 

 British also  di-ˈfi-sət,

 or  ˈdē-fə-sət

1

a(1)

: deficiency in amount or quality

a deficit in rainfall

(2)

: a lack or impairment in an ability or functional capacity

cognitive deficits

a hearing deficit

b

: disadvantage

scored two runs to overcome a 2–1 deficit

2

a

: an excess of expenditure over revenue

facing a deficit of $3 billion

raise taxes to help reduce the budget deficit

b

: a loss (see loss sense 4b) in business operations

the year's operating deficit

Synonyms

• crunch
• dearth
• deficiency
• drought
• drouth
• failure
• famine
• inadequacy
• inadequateness
• insufficiency
• lack
• lacuna
• paucity
• pinch
• poverty
• scantiness
• scarceness
• scarcity
• shortage
• undersupply
• want

Examples of deficit in a Sentence

The government is facing a deficit of $3 billion.

We will reduce the federal budget deficit.

The team overcame a four-point deficit to win the game.

She has a slight hearing deficit in her left ear.

Recent Examples on the Web

The Celtics will have to make the NBA’s 14th comeback from a 3-1 deficit to extend their title reign and may have to do it without All-Star Jayson Tatum, who was carried off the court with a right leg injury with 2:58 left. —Brian Mahoney, Baltimore Sun, 13 May 2025

But Providence, which had rallied from 2-1 deficits for back-to-back 3-2 victories in the first two games in Charlotte, scored twice in the next 12 1/2 minutes, the last on a power play. —Richard Walker, Charlotte Observer, 12 May 2025

Having already halved the deficit through Gabriel Martinelli, Mikel Arteta’s side soon equalised through Mikel Merino, whose subsequent sending-off for a second yellow card belatedly helped Liverpool stem the tide. —James Pearce, New York Times, 12 May 2025

The Cougars were unable to overcome a 20-13 deficit after three quarters and were held scoreless in the fourth. —Alex Kushel, Sun Sentinel, 11 May 2025

Word History

Etymology

borrowed from French déficit, going back to Middle French, "item lacking in an inventory," borrowed from Latin dēficit "it is lacking," 3rd person singular present indicative of dēficere "to be lacking, run short, fail" — more at deficient

First Known Use

1782, in the meaning defined at sense 1a(1)

Phrases Containing deficit

• attention deficit disorder
• attention deficit hyperactivity disorder
• deficit spending
• trade deficit

Kids Definition

deficit

noun

def·​i·​cit ˈdef-ə-sət 

: a deficiency in amount

especially : an excess of expenses over income

Medical Definition

deficit

noun

de·​fi·​cit

ˈdef-(ə-)sət; British also di-ˈfis-ət, ˈdē-fə-sət

: a deficiency of a substance

a potassium deficit

also : a lack or impairment of a functional capacity

cognitive deficits