defective

D2E1F4E1C3T1I1V4E1
UK/dɪˈfɛktɪv/

adjective

Having one or more defects.

“Artillery officers sometimes have defective hearing.”

CommonScrabble 18

Meanings

adjectivedefective (comparative more defective, superlative most defective)

comparative more defective · superlative most defective

  1. Having one or more defects.

    Artillery officers sometimes have defective hearing.

    2 more examples

    If the workmanship is defective, they'll replace the shoes with a new pair.

    It is likely that the long evolutionary trajectory of Mycoplasma went from a reductive autotroph to oxidative heterotroph to a cell-wall–defective degenerate parasite. This evolutionary trajectory assumes the simplicity to complexity route of biogenesis, a point of view that is not universally accepted.

    2013 March, Harold J. Morowitz, “The Smallest Cell”, in American Scientist, volume 101, number 2, United States: Sigma Xi, →ISSN, →OCLC, archived from the original on 04 Jan 2017, page 83

    Synonyms: faulty · Antonyms: complete, perfect, undefective

  2. especially a verbgrammarLacking some forms; e.g., having only one tense or being usable only in the third person.
  3. ArabicgrammarHaving a root whose final consonant is weak (ي, و, or ء).
  4. communicationsNot capable of representing all the phonemic distinctions of a language it is used to write.
  5. Spelled without matres lectionis, for example אמץ (ómets, “courage”) as opposed to the plene spelling אומץ where the letter vav ⟨ו⟩ indicates the vowel o.

    Antonyms: plene

adverbdefective (not comparable)
  1. not comparableWithout matres lectionis (letters indicating vowels) written out.

    For the sake of comparison, note the distribution of these spellings in some other Hebrew sources: in the MT the vowel o after the first consonant of the root is written defective in approximately 3,600 cases as against 850 cases of plene spelling.

    2013, Gregor Geiger, Plene Writing of the Qōṭēl Pattern in the Dead Sea Scrolls

    Antonyms: plene

noundefective (plural defectives)

plural defectives

  1. A person or thing considered to be defective.

    It is an offence, subject to the exception mentioned in this section, for a person to procure a woman who is a defective to have unlawful sexual intercourse in any part of the world.

    1956, Parliament of the United Kingdom, “Part I, section 9(1)”, in Sexual Offences Act 1956, page 3
    1 more example

    There were many more kinds of mental institutions at mid-century, ones for "mental defectives and epileptics" and the mentally retarded, psychiatric wards in veterans hospitals, as well as "psychopathic" and private mental hospitals.

    2007 January 15, Bernard E. Harcourt, “The Mentally Ill, Behind Bars”, in New York Times
  2. A word written without matres lectionis (letters indicating vowels).

    Thus, in the Pentateuch and in the earlier prophets the plenes are counted, whilst in the later prophets the defectives are enumerated.

    2011, Christian D. Ginsburg, Jacob Ben Chajim Ibn Adonijah's Introduction to the Rabbinic Bible: Hebrew and English with Explanatory Notes

    Antonyms: plene

Synonyms & antonyms

adjectiveHaving one or more defects.

Similar

adjectiveSpelled without matres lectionis, for example אמץ (ómets, “courage”) as opposed to the plene spelling אומץ where the letter vav ⟨ו⟩ indicates the vowel o.

Opposite

adverbWithout matres lectionis (letters indicating vowels) written out.

Opposite

nounA word written without matres lectionis (letters indicating vowels).

Opposite

More synonyms by meaning

adjectivehaving a defect

adjectivemarkedly subnormal in structure or function or intelligence or behavior

adjectivenot working properly

Synonym sets from Open English WordNet, CC BY 4.0.

Origin

  1. Late Latindēfectīvus
  2. Old Frenchdefectif
  3. Middle Englishdefectif
  4. Englishdefective

From Middle English defectif, defective, from Old French defectif, from Late Latin dēfectīvus.

Full word history & related roots →

Translations

Arabic معيب, نَاقِص
  • معيب (maʕīb)having one or more defects
  • نَاقِص (nāqiṣ)having a weak final consonant
Bulgarian повреден, неизправен
  • повреден (povreden)having one or more defects
  • неизправен (neizpraven)having one or more defects
Catalan defectiu, defectuós
  • defectiuhaving one or more defects
  • defectuóshaving one or more defects
  • defectiuhaving only some forms
Czech vadný
  • vadnýhaving one or more defects
Danish fejlbehæftet, defekt
  • fejlbehæftethaving one or more defects
  • defekthaving one or more defects
  • ufuldstændighaving only some forms
Dutch gebrekkig, onvolkomen
  • gebrekkighaving one or more defects
  • onvolkomenhaving one or more defects
  • onvolmaakthaving one or more defects
  • defectiefhaving one or more defects
  • defectiefhaving only some forms
Finnish puutteellinen, vajaa
  • puutteellinenhaving one or more defects
  • vajaahaving one or more defects
  • vajavainenhaving one or more defects
  • viallinenhaving one or more defects
  • rikkinäinenhaving one or more defects
  • vaillinainenhaving only some forms
French défectueux, défectif
  • défectueuxhaving one or more defects
  • défectifhaving only some forms
German fehlerhaft, defekt
  • fehlerhafthaving one or more defects
  • defekthaving one or more defects
  • mangelhafthaving only some forms
  • unvollständighaving only some forms
Greek ελαττωματικός, ελλειπτικός
  • ελαττωματικός (elattomatikós)having one or more defects
  • ελλειπτικός (elleiptikós)having only some forms
Hebrew פגום, חָסֵר
  • פגום (pagum)having one or more defects
  • חָסֵר (khasér)having only some forms
  • חָסֵר (khasér)spelled without matres lectionis
Hungarian hibás, hiányos
  • hibáshaving one or more defects
  • hiányoshaving one or more defects
  • hiányos ragozásúhaving only some forms
  • hiányoshaving only some forms
Irish easpach, uireasach
  • easpachhaving one or more defects
  • uireasachhaving only some forms
Italian difettoso, difettivo
  • difettosohaving one or more defects
  • difettivohaving only some forms
Latin vitiōsus, mendōsus
  • vitiōsushaving one or more defects
  • mendōsushaving one or more defects
  • dēfectīvushaving one or more defects
Polish wadliwy, felerny
  • wadliwyhaving one or more defects
  • felernyhaving one or more defects
  • ułomnyhaving only some forms
Portuguese defeituoso, defectivo
  • defeituosohaving one or more defects
  • defectivohaving only some forms
Romanian defect, defectuos
  • defecthaving one or more defects
  • defectuoshaving one or more defects
  • defectivhaving only some forms
Russian дефе́ктный, повреждённый
  • дефе́ктный (deféktnyj)having one or more defects
  • повреждённый (povreždjónnyj)having one or more defects
  • неиспра́вный (neisprávnyj)having one or more defects
  • дефекти́вный (defektívnyj)having only some forms
Scottish Gaelic uireasbhach
  • uireasbhachhaving only some forms
Spanish defectuoso, defectivo
  • defectuosohaving one or more defects
  • defectivohaving only some forms
Swedish defekt, defektiv
  • defekthaving one or more defects
  • defektivhaving only some forms
  • ofullständighaving only some forms
Tagalog depektibo, depektuwoso
  • depektibohaving one or more defects
  • depektuwosohaving one or more defects
Turkish hatalı, kusurlu
  • hatalıhaving one or more defects
  • kusurluhaving one or more defects
  • çürükhaving one or more defects
  • eksikhaving one or more defects
Welsh ddiffygiol
  • ddiffygiolhaving only some forms

Rhymes & wordplay

Rhymes with defective

All rhymes →
Cite this entry
APA

defective. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/defective

MLA

“defective.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/defective. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “defective,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/defective.

Source: defective on Wiktionary, CC BY-SA 4.0.