unconstitutional

adjective

Contrary to or violative of the constitution of a state or other sovereign institution.

“That recently passed political bill has been declared unconstitutional.”

Less commonFirst used 18th C.Scrabble 18

Meanings

adjectiveunconstitutional (comparative more unconstitutional, superlative most unconstitutional)

comparative more unconstitutional · superlative most unconstitutional

  1. Contrary to or violative of the constitution of a state or other sovereign institution.First known use 18th C.

    That recently passed political bill has been declared unconstitutional.

    1 more example

    A California law that ensures many gig workers are considered independent contractors, while affording them some limited benefits, is unconstitutional and unenforceable, a California Superior Court judge ruled Friday evening.

    2021 August 20, Kate Conger, “California’s Gig Worker Law Is Unconstitutional, Judge Rules”, in The New York Times

    Synonyms: anticonstitutional · Antonyms: constitutional

Synonyms & antonyms

adjectiveContrary to or violative of the constitution of a state or other sovereign institution.

More synonyms by meaning

adjectivenot consistent with or according to a constitution; contrary to the U.S. Constitution

Synonym sets from Open English WordNet, CC BY 4.0.

Origin

  1. Proto-Indo-European*né
  2. Proto-Indo-European*n̥-
  3. Proto-Germanic*un-
  4. Proto-West Germanic*un-
  5. Old Englishun-
  6. Middle Englishun-
  7. Englishun-
  8. Englishconstitutional
  9. Englishunconstitutional

From un- + constitutional.

Full word history & related roots →

Translations

Arabic غَيْرُ دُسْتُورِيّ
  • غَيْرُ دُسْتُورِيّ (ḡayru dustūriyy)contrary to the constitution
Bulgarian противоконституцио́нен
  • противоконституцио́нен (protivokonstituciónen)contrary to the constitution
Catalan inconstitucional
  • inconstitucionalcontrary to the constitution
Chinese Mandarin 違憲 /违宪
  • 違憲 /违宪 (wéixiàn)contrary to the constitution
Czech protiústavní, neústavní
  • protiústavnícontrary to the constitution
  • neústavnícontrary to the constitution
Danish grundlovsstridig, i strid med grundloven
  • grundlovsstridigcontrary to the constitution
  • i strid med grundlovencontrary to the constitution
  • forfatningsstridigcontrary to the constitution
Dutch ongrondwettelijk, ongrondwettig
  • ongrondwettelijkcontrary to the constitution
  • ongrondwettigcontrary to the constitution
Finnish perustuslain vastainen
  • perustuslain vastainencontrary to the constitution
French inconstitutionnel, anticonstitutionnel
  • inconstitutionnelcontrary to the constitution
  • anticonstitutionnelcontrary to the constitution
German verfassungswidrig
  • verfassungswidrigcontrary to the constitution
Hindi असंवैधानिक
  • असंवैधानिक (asamvaidhānik)contrary to the constitution
Hungarian alkotmányellenes
  • alkotmányellenescontrary to the constitution
Indonesian inkonstitusional
  • inkonstitusionalcontrary to the constitution
Irish míbhunreachtúil
  • míbhunreachtúilcontrary to the constitution
Italian incostituzionale
  • incostituzionalecontrary to the constitution
Japanese 違憲
  • 違憲 (iken)contrary to the constitution
Polish niekonstytucyjny, antykonstytucyjny
  • niekonstytucyjnycontrary to the constitution
  • antykonstytucyjnycontrary to the constitution
Portuguese inconstitucional, anticonstitucional
  • inconstitucionalcontrary to the constitution
  • anticonstitucionalcontrary to the constitution
Russian неконституцио́нный
  • неконституцио́нный (nekonstituciónnyj)contrary to the constitution
Spanish inconstitucional, anticonstitucional
  • inconstitucionalcontrary to the constitution
  • anticonstitucionalcontrary to the constitution
Swedish grundlagsvidrig, okonstitutionell
  • grundlagsvidrigcontrary to the constitution
  • okonstitutionellcontrary to the constitution
Vietnamese vi hiến
  • vi hiếncontrary to the constitution
Cite this entry
APA

unconstitutional. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/unconstitutional

MLA

“unconstitutional.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/unconstitutional. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “unconstitutional,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/unconstitutional.

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