| Main Entry: | |
| Part of Speech: | adjective |
| Definition: | not allowed, permitted |
| Synonyms: | anathema, banned, beyond the pale, disapproved, forbidden, frowned on, illegal, off limits, out of bounds, outlawed, prohibited, proscribed, reserved, restricted, ruled out, unacceptable, unmentionable, unthinkable |
| Antonyms: | acceptable, allowed, mentionable, ok |
| Main Entry: | undue |
| Part of Speech: | adjective |
| Definition: | excessive, unnecessary |
| Synonyms: | disproportionate, exceeding, exorbitant, extravagant, extreme, forbidden, ill-timed, illegal, immoderate, improper, inappropriate, inapt, indecorous, inept, inordinate, intemperate, needless, overmuch, sinister, too great, too much, unapt, uncalled-for, unconscionable, underhanded, undeserved, unfair, unfitting, unjust, unjustifiable, unjustified, unmeasurable, unreasonable, unseasonable, unseemly, unsuitable, untimely, unwarrantable, unwarranted |
| Notes: | undo means to reverse an action or thing; undue means 'inappropriate' or 'excessive' |
| Antonyms: | moderate, reasonable, sensible |
| Main Entry: | unethical |
| Part of Speech: | adjective |
| Definition: | dishonest, immoral |
| Synonyms: | cheating, corrupt, crooked, dirty*, dirty-dealing, dishonorable, disreputable, double-crossing, fake, fishy, flimflam, fly-by-night, illegal, improper, mercenary, scam*, shady*, sharp*, slick*, slippery*, sneaky*, two-faced, two-timing, underhand, unfair, unprincipled, unprofessional, unscrupulous, wrong |
| Antonyms: | ethical, good, honest, moral, right, upright |
| Main Entry: | unfair |
| Part of Speech: | adjective |
| Definition: | prejudiced, wrongful |
| Synonyms: | arbitrary, bad, base, biased, bigoted, blameworthy, cheating, criminal, crooked, cruel, culpable, discreditable, discriminatory, dishonest, dishonorable, foul, grievous, illegal, immoral, improper, inequitable, inexcusable, iniquitous, injurious, low, mean, one-sided, partial, partisan, petty, shameful, shameless, uncalled-for, undue, unethical, unjust, unjustifiable, unlawful, unprincipled, unreasonable, unrightful, unscrupulous, unsporting, unwarranted, vicious, vile, wicked, wrong |
| Antonyms: | fair, honest, just, unprejudiced |
| Main Entry: | unlawful |
| Part of Speech: | adjective |
| Definition: | against the law |
| Synonyms: | actionable, banned, bootleg, criminal, flagitious, forbidden, illegal, illegitimate, illicit, improper, iniquitous, lawless, nefarious, outlawed, prohibited, taboo, unauthorized, under-the-counter, unlicensed, wrongful |
| Antonyms: | authorized, lawful, legal, right |
| Main Entry: | unscrupulous |
| Part of Speech: | adjective |
| Definition: | immoral |
| Synonyms: | arrant, base, casuistic, conscienceless, corrupt, crafty, crooked, deceitful, degraded, degrading, disgraceful, dishonest, dishonorable, exploitative, illegal, improper, low-down, mercenary, perfidious, petty, questionable, recreant, ruthless, scandalous, scheming, self-seeking, selfish, shady, shameless, shifty, sinister, slippery, sly, two-faced, unconscientious, unconscionable, underhand, underhanded, unethical, unfair, unprincipled, unworthy, venal, wicked, wrongful |
| Antonyms: | ethical, good, moral, principled, scrupulous |
| Main Entry: | villainous |
| Part of Speech: | adjective |
| Definition: | criminal |
| Synonyms: | atrocious, bad, corrupt, crooked, cruel, culpable, deplorable, depraved, diabolical, dirty, evil, felonious, hateful, ignoble, illegal, illicit, immoral, iniquitous, knavish, lawless, low, mean, nefarious, peccant, reprehensible, scandalous, shady*, sinful, unlawful, vile, wicked |
| Main Entry: | wrong |
| Part of Speech: | adjective |
| Definition: | immoral, dishonest |
| Synonyms: | amoral, bad, base, blamable, blameworthy, blasphemous, censurable, corrupt, criminal, crooked, debauched, depraved, dishonorable, dissipated, dissolute, evil, felonious, illegal, illicit, indecent, iniquitous, naughty, profane, profligate, reprehensible, reprobate, risqué, sacrilegious, salacious, shady, sinful, smutty, unethical, unfair, ungodly, unholy, unjust, unlawful, unrighteous, vicious, wanton, wicked, wrongful |
| Antonyms: | decent, good, honest, moral |
| Main Entry: | off-limits |
| Part of Speech: | adjective, adverb |
| Definition: | not within the allowed limits |
| Synonyms: | banned, barred, forbidden, illegal, illicit, not allowed, not permitted, out of bounds, outlawed, prohibited, restricted, taboo, unlawful |