Synonyms for Iniquitous:

adj.

all (adjective)
sinful, ungodly.
dishonest (adjective)
corrupt.
evil (adjective)
black.
unjust (adjective)
evil, unfair, wicked, sinful.
wicked (adjective)
debased, scandalous, immoral, shocking, Misdoing, amoral, sinful, blameworthy, sadistic, felonious, obnoxious, criminal, depraved, degenerate, base, sinister, wicked, indecent, reprehensible, black, bad, lawbreaking, improper, perverse, wrongdoing, corrupt, debauched, evildoing, villainous, damnable.

n.

deviant, perverted, sordid, amoral, gross. iniquitous (noun)
ungodly, sinful, wicked.

Other synonyms:

peccant. evil, reprobate. Other relevant words:
evil, sordid, perverted, deviant, gross, reprobate, peccant, bad, unfair, ungodly, amoral.

Usage examples for iniquitous

  1. When those States find that they must, in their national character and connexion, suffer in the disgrace, and share in the inconveniences attendant upon that detestable and iniquitous traffic, they may be desirous also to share in the benefits arising from it; and the odium attending it will be greatly effaced by the sanction which is given to it in the general government. – The Anti-Slavery Examiner, Omnibus by American Anti-Slavery Society
  2. School, where there would be other iniquitous small boys to be led into trouble, had no particular terrors. – Jimgrim and Allah's Peace by Talbot Mundy
  3. The least part of the loss was, that the praefect himself was taken prisoner; for he was not only in the present instance guilty of having rashly engaged the enemy, but previously, in the capacity of farmer of the revenue, by iniquitous practices of every description, had shown himself faithless and injurious to the state, as well as the companies. – The History of Rome; Books Nine to Twenty-Six by Titus Livius