Standard Lemma guide

deficiency

noun · 6 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.

  • /dɪˈfɪʃənsi/
  • Southern-England: Recorded audio is listed in the source snapshot.
  • CMU ARPABET: D IH0 F IH1 SH AH0 N S IY0 Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.

1

noun

Meaning 1

Inadequacy or incompleteness.

Definition source: English Wiktionary via Wiktextract

Usage: uncountable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: lack, lacking, lackingness, want

Antonyms: sufficiency, plenty, plentitude, plenitude, excess, surfeit

2

noun

Meaning 2

An insufficiency, especially of something essential to health.

Definition source: English Wiktionary via Wiktextract

Usage: countable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: lack, lacking, want, shortage

Antonyms: sufficiency, excess, surfeit

3

noun

Meaning 3

The amount by which the number of double points on a curve is short of the maximum for curves of the same degree.

Definition source: English Wiktionary via Wiktextract

Usage: countable, uncountable

Topics: geometry, mathematics, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

4

noun

Meaning 4

The codimension of a linear system in the corresponding complete linear system.

Definition source: English Wiktionary via Wiktextract

Usage: countable, uncountable

Topics: geometry, mathematics, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

5

noun

Meaning 5

lack of an adequate quantity or number

Definition source: Princeton WordNet 3.0

Examples

  • the inadequacy of unemployment benefits

Meaning relationships

Synonyms: insufficiency, inadequacy

Antonyms: none provided

Broader terms: amount

Narrower terms: meagerness, meagreness, leanness, poorness, scantiness, scantness, exiguity, deficit, shortage, shortfall, scarcity, scarceness, slenderness

6

noun

Meaning 6

the state of needing something that is absent or unavailable

Definition source: Princeton WordNet 3.0

Examples

  • there is a serious lack of insight into the problem
  • water is the critical deficiency in desert regions
  • for want of a nail the shoe was lost

Meaning relationships

Synonyms: lack, want

Antonyms: none provided

Broader terms: need, demand

Narrower terms: absence, dearth, famine, shortage, deficit, mineral deficiency, shortness, stringency, tightness

History

Etymology

From deficient + -cy. Compare Latin dēficientia.

Across languages

Translations

101 source translations are retained for this English entry.

  • Bulgarian: недостатък (nedostatǎk) — inadequacy or incompleteness
  • Catalan: deficiència — inadequacy or incompleteness
  • Chinese Mandarin: 不足之處 /不足之处 (bùzúzhīchù) — inadequacy or incompleteness
  • Czech: nedostatečnost — inadequacy or incompleteness
  • Danish: mangel — inadequacy or incompleteness
  • Danish: utilstrækkelighed — inadequacy or incompleteness
  • Dutch: tekort — inadequacy or incompleteness
  • Finnish: puute — inadequacy or incompleteness
  • Finnish: puutteellisuus — inadequacy or incompleteness
  • Finnish: vajaus — inadequacy or incompleteness
  • Finnish: vaje — inadequacy or incompleteness
  • French: déficience — inadequacy or incompleteness
  • Galician: pobreza — inadequacy or incompleteness
  • Georgian: დეფიციტი (depiciṭi) — inadequacy or incompleteness
  • Georgian: ნაკლოვანება (naḳlovaneba) — inadequacy or incompleteness
  • Georgian: უკმარისობა (uḳmarisoba) — inadequacy or incompleteness
  • Georgian: დანაკლისი (danaḳlisi) — inadequacy or incompleteness
  • Georgian: დეფექტურობა (depekṭuroba) — inadequacy or incompleteness
  • Georgian: არასრულფასოვნება (arasrulpasovneba) — inadequacy or incompleteness
  • Gothic: 𐍅𐌰𐌽 (wan) — inadequacy or incompleteness
  • Ancient Greek: ἔλλειψις (élleipsis) — inadequacy or incompleteness
  • Hindi: अभाव (abhāv) — inadequacy or incompleteness
  • Hindi: कमी (kamī) — inadequacy or incompleteness
  • Hungarian: hiányosság — inadequacy or incompleteness
  • Indonesian: kekurangan — inadequacy or incompleteness
  • Interlingua: deficientia — inadequacy or incompleteness
  • Irish: díothacht — inadequacy or incompleteness
  • Irish: easpacht — inadequacy or incompleteness
  • Irish: uireasa — inadequacy or incompleteness
  • Italian: deficienza — inadequacy or incompleteness
  • Latin: dēficientia — inadequacy or incompleteness
  • Malay: kekurangan — inadequacy or incompleteness
  • Malayalam: കുറവ് (kuṟavŭ) — inadequacy or incompleteness
  • Malayalam: പോരായ്മ (pōrāyma) — inadequacy or incompleteness
  • Māori: takarepatanga — inadequacy or incompleteness
  • Māori: kōpaka — inadequacy or incompleteness
  • Māori: tarepatanga — inadequacy or incompleteness
  • Norwegian Bokmål: utilstrekkelighet — inadequacy or incompleteness
  • Norwegian Bokmål: mangel — inadequacy or incompleteness
  • Persian: کاستی (kâsti) — inadequacy or incompleteness
  • Polish: niedobór — inadequacy or incompleteness
  • Polish: deficyt — inadequacy or incompleteness
  • Portuguese: carência — inadequacy or incompleteness
  • Portuguese: deficiência — inadequacy or incompleteness
  • Portuguese: escassez — inadequacy or incompleteness
  • Portuguese: falta — inadequacy or incompleteness
  • Romanian: deficiență — inadequacy or incompleteness
  • Romanian: lipsă — inadequacy or incompleteness
  • Romanian: insuficiență — inadequacy or incompleteness
  • Russian: недоста́ток (nedostátok) — inadequacy or incompleteness
  • Russian: поро́к (porók) — inadequacy or incompleteness
  • Russian: неполноце́нность (nepolnocénnostʹ) — inadequacy or incompleteness
  • Russian: дефе́кт (defékt) — inadequacy or incompleteness
  • Swahili: athari — inadequacy or incompleteness
  • Tagalog: kakulangan — inadequacy or incompleteness
  • Tagalog: depisyensiya — inadequacy or incompleteness
  • Tocharian B: menki — inadequacy or incompleteness
  • Bulgarian: недостиг (nedostig) — insufficiency
  • Bulgarian: дефицит (deficit) — insufficiency
  • Catalan: dèficit — insufficiency
  • Chinese Mandarin: 缺少 (quēshǎo) — insufficiency
  • Chinese Mandarin: 欠缺 (qiànquē) — insufficiency
  • Chinese Mandarin: 不足之處 /不足之处 (bùzúzhīchù) — insufficiency
  • Czech: nedostatek — insufficiency
  • Dutch: tekort — insufficiency
  • Finnish: vajaus — insufficiency
  • Finnish: vaje — insufficiency
  • Finnish: alijäämä — insufficiency
  • French: déficience — insufficiency
  • French: carence — insufficiency
  • Georgian: ნაკლებობა (naḳleboba) — insufficiency
  • Georgian: უკმარობა (uḳmaroba) — insufficiency
  • Georgian: უკმარისობა (uḳmarisoba) — insufficiency
  • German: Mangel — insufficiency
  • Greek: ανεπάρκεια (anepárkeia) — insufficiency
  • Ancient Greek: ἔνδεια (éndeia) — insufficiency
  • Hindi: अभाव (abhāv) — insufficiency
  • Hindi: कमी (kamī) — insufficiency
  • Hungarian: hiány — insufficiency
  • Irish: easpa — insufficiency
  • Irish: uireasa — insufficiency
  • Irish: easnamh — insufficiency
  • Italian: deficienza — insufficiency
  • Kyrgyz: таңсык (taŋsık) — insufficiency
  • Malayalam: കുറവ് (kuṟavŭ) — insufficiency
  • Malayalam: പോരായ്മ (pōrāyma) — insufficiency
  • Malayalam: അപര്യാപ്തത (aparyāptata) — insufficiency
  • Māori: kāhoretanga — insufficiency
  • Māori: kōpakatanga — insufficiency
  • Polish: niedobór — insufficiency
  • Portuguese: deficiência — insufficiency
  • Romanian: lipsă (de) — insufficiency
  • Romanian: insuficiență — insufficiency
  • Russian: нехва́тка (nexvátka) — insufficiency
  • Russian: дефици́т (deficít) — insufficiency
  • Scottish Gaelic: easbhaidh — insufficiency
  • Spanish: deficiencia — insufficiency
  • Spanish: déficit — insufficiency
  • Swahili: athari — insufficiency
  • Swedish: brist — insufficiency
  • Ottoman Turkish: نقصان (noksan) — insufficiency
Real reading context

deficiency in complete knowledge articles