Pronunciation (UK) IPA (key): /ˈdɛfɪsɪt/ (US) IPA (key): /ˈdɛfəsɪt/ Audio (UK)(file) Hyphenation: de‧fi‧cit Noun Singular deficit Plural deficits (countable) A deficit is a lack or shortage of something, such as money. This section needs someone to add example sentences to it.Wikiwand - on Seamless Wikipedia browsing. On steroids.Remove ads