Synonyms of the word

unlawful

• adj. Prohibited; not permitted by law (either civil or criminal law; see illegal).

corrupt

• adj. In a depraved state; debased; perverted; morally degenerate; weak in morals.
• adj. Abounding in errors; not genuine or correct; in an invalid state.
• adj. In a putrid state; spoiled; tainted; vitiated; unsound.
• v. (transitive) To make corrupt; to change from good to bad; to draw away from the right path; to deprave;…
• v. (intransitive) To become putrid or tainted; to putrefy; to rot.
• v. To debase or render impure by alterations or innovations; to falsify.
• v. To waste, spoil, or consume; to make worthless.

crooked

• v. simple past tense and past participle of crook.
• adj. Not straight; having one or more bends or angles.
• adj. Set at an angle; not vertical or square.
• adj. (figuratively) Dishonest or illegal; corrupt.

illegal

• adj. Contrary to or forbidden by law, especially criminal law.
• adj. Forbidden by established rules.
• adj. (philately, of an issue printed for collectors) Totally fictitious, and often issued on behalf of a non-existent…
• adj. (of a person, sometimes offensive) Being or doing something illegally.
• adj. (chiefly US, sometimes offensive) Being an illegal immigrant; residing in a country illegally.
• n. (colloquial, offensive) An illegal immigrant.
• n. An illegal resident spy.

illegitimate

• adj. Illegal; against the law.
• adj. Born to unmarried parents.
• adj. Illogical; incorrectly deduced.
• adj. Not authorized by good usage; not genuine; spurious.
• adj. (botany) Involving the fertilization of pistils by stamens not of their own length, in heterogonously…
• n. someone born illegitimately.

illicit

• adj. (law) Not approved by law, but not invalid.
• adj. Breaking social norms.
• adj. Unlawful.

improper

• adj. unsuitable to needs or circumstances; inappropriate; inapt.
• adj. Not in keeping with conventional mores or good manners; indecent or immodest.
• adj. Not according to facts; inaccurate or erroneous.
• adj. Not consistent with established facts; incorrect.
• adj. Not properly named; See, for example, improper fraction.
• adj. (obsolete) Not specific or appropriate to individuals; general; common.
• v. (obsolete, transitive) To appropriate; to limit.
• v. (obsolete) To behave improperly.

irregular

• adj. Nonstandard; not conforming to rules or expectations.
• adj. Of a surface, rough.
• adj. Without symmetry, regularity, or uniformity.
• adj. (geometry, of a polygon) Not regular; having sides that are not equal or angles that are not equal.
• adj. (geometry, of a polyhedron) Whose faces are not all regular polygons (or are not equally inclined to each…
• n. A soldier who is not a member of an official military force and, often, does not follow regular army tactics.
• n. One who does not regularly attend a venue.

lawless

• adj. Not governed by any law.
• adj. Prohibited by law; unlawful, illegal.
• adj. Not restrained by the law or by discipline; unruly, disorderly.

outlaw

• n. A fugitive from the law.
• n. (historical) A criminal who is excluded from normal legal rights; one who can be killed at will without…
• n. A person who operates outside established norms.
• n. A wild horse.
• n. (humorous) An in-law: a relative by marriage.
• n. (slang) A prostitute who works alone, without a pimp.
• v. To declare illegal.
• v. To place a ban upon.
• v. To remove from legal jurisdiction or enforcement.
• v. To deprive of legal force.

outlawed

• adj. (of an act) put beyond the limits of the law, forbidden, against the law.
• adj. (of a person) put beyond the limits of the law, declared an outlaw or declared a criminal.
• v. simple past tense and past participle of outlaw.

unconventional

• adj. Not adhering to convention or accepted standards.
• adj. Out of the ordinary.
• adj. Atypical.
• n. Something or someone that is unconventional.

wrongful

• adj. wrong or unjust.
• adj. unlawful or illegal.