Definition of illegal :
Not according to, or authorized by, law; specif., contrary to, or in violation of, human law; unlawful; illicit; hence, immoral; as, an illegal act; illegal trade; illegal love.
contraband, iniquitous, misbranded, black-market, outlawed, vile, unwarranted, extralegal, immoral, abominable, culpable, proscribed, hot, smuggled, embezzled, banned, ill-gotten, ineligible, unwarrantable, guilty, vicious, mislabeled, after-hours, prohibited, wicked, outside the law, not legal, extrajudicial, stolen, interdicted, law, black, nonlegal, bootlegged, amerciable, penal, uncertified, nefarious, not approved, under-the-counter, outlaw, misappropriated, flagitious, unratified, misbegotten, dirty, irregular, sinful, against the law
illegal (part of speech: adjective)
wrong (part of speech: adjective)
- On top of this the Union Parliament has passed a law making even the future purchase of land by Negroes illegal save in restricted areas! - "The Negro", W.E.B. Du Bois.
- It would be illegal, but it would not be the first illegal thing. - "Quiet Talks about Jesus", S. D. Gordon.
- Every execution- criminal or civil- had been therefore illegal. - "The History of Tasmania, Volume I (of 2)", John West.