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

That, plus 13 turnovers, added up to a 64-47 halftime deficit for Brooklyn. —C.j. Holmes, New York Daily News, 1 Mar. 2025

After city voters narrowly rejected Measure E, however, reality sank in — sort of — in the form of a $258 million deficit forecast for fiscal 2024-25. —U T Editorial Board, San Diego Union-Tribune, 28 Feb. 2025

Driving the news: The House GOP narrowly passed its budget resolution this week, meaning its quest to reduce the federal deficit by somewhere between $1.5 and $2 trillion — while extending trillions of dollars in tax cuts passed during Trump's first term — lives another week. —Caitlin Owens, Axios, 28 Feb. 2025

Without the need to offset their cost, these tax breaks could be passed as part of a broader package without the risk of being cut to satisfy deficit concerns. —Shahar Ziv, Forbes, 27 Feb. 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