Legal Definition and Related Resources of Illegal

Meaning of Illegal

Forbidden by law; contrary to law; unlawful .

Illegal Alternative Definition

Contrary to law. Not ssTionymous with unlawful (q. v.).

Synonyms of Illegal


  • actionable
  • against the law
  • banned
  • contrary to law
  • criminal
  • exceeding the law
  • felonious
  • forbidden
  • illegitimate
  • illicit
  • impermissible
  • improper
  • inlicitus
  • invalid
  • lawless
  • not according to law
  • not allowed
  • not approved
  • not authorized by law
  • not covered by law
  • not permitted
  • not valid
  • outlawed
  • outside the law
  • prohibited
  • prohibited by law
  • proscribed
  • punishable
  • quod contra leges Jit
  • unauthorized
  • unchartered
  • unconstitutional
  • unjustified
  • unlawful
  • unsanctioned
  • unwarrantable
  • unwarranted
  • vetitus
  • without authority
  • wrongful
  • Associated Concepts: illegal acts
  • illegal business
  • illegal combination
  • illegal contract
  • illegal detention
  • illegal discrimination
  • illegal force
  • illegal operation
  • illegal picketing
  • illegal possession
  • illegal practice
  • illegal purpose
  • illegal restraint
  • illegal sale
  • illegal search and seizure
  • illegal statute
  • illegal taking
  • illegal tax
  • illegal trade
  • illegal transaction
  • illegal use
  • mala in se
  • mala prohibita

Related Entries of Illegal in the Encyclopedia of Law Project

Browse or run a search for Illegal in the American Encyclopedia of Law, the Asian Encyclopedia of Law, the European Encyclopedia of Law, the UK Encyclopedia of Law or the Latin American and Spanish Encyclopedia of Law.

Illegal in Historical Law

You might be interested in the historical meaning of this term. Browse or search for Illegal in Historical Law in the Encyclopedia of Law.

Legal Abbreviations and Acronyms

Search for legal acronyms and/or abbreviations containing Illegal in the Legal Abbreviations and Acronyms Dictionary.

Related Legal Terms

You might be also interested in these legal terms:

Mentioned in these terms

Co-conspirator, Consideration, Constructive Discharge, Covenant, Curative, Duress, Enable, Extenuating Circumstances, Found-in, Fruits Of The Poisonous Tree, Illegal Contract, Illgotten, Illicit, Immoral, Moonshine, Plain View Doctrine, Provocation, Racket, Restraint Of Trade, Search.


You might be interested in these references tools:

Resource Description
Illegal in the Dictionary Illegal in our legal dictionaries
Browse the Legal Thesaurus Find synonyms and related words of Illegal
Legal Maxims Maxims are established principles that jurists use as interpretive tools, invoked more frequently in international law
Legal Answers (Q&A) A community-driven knowledge creation process, of enduring value to a broad audience
Related topics Illegal in the World Encyclopedia of Law


This definition of Illegal is based on the The Cyclopedic Law Dictionary . This entry needs to be proofread.

Vocabularies (Semantic Web Information)


Resource Description
Topic Map A group of names, occurrences and associations
Topic Tree A topic display format, showing the hierarchy
Sitemap Index Sitemap Index, including Taxonomies The URI of Illegal (more about URIs)

Crime: illegal


This term is an adjetive.

Etimology of Illegal

(You may find illegal at the world legal encyclopedia and the etimology of more terms).

1630s, from French illégal (14c.) or directly from Medieval Latin illegalis, from assimilated form of in- “not, opposite of” (see in- (1)) + Latin legalis (see legal). Term illegal immigrant first recorded 1892 in American English (illegal immigration is from 1887); used in British English in 1940s in reference to the Jewish movement to Palestine.


See Also

  • Legal
  • Error
  • Erroneous



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