UNCONSCIONABLE

adj. 1 conscienceless, unscrupulous, amoral, unprincipled, immoral, unethical, evil, criminal, unjust, wicked, arrant This unconscionable thief stole from his own mother 2 excessive, extortionate, egregious, extreme, unwarranted, unreasonable, outrageous, inordinate, immoderate, exorbitant, indefensible, unpardonable, inexcusable, unforgivable When I questioned the unconscionable size of his bill, the plumber explained that he charges extra for house calls