Synonym of unreasonable

irrational perverse arbitrary unreasoning awkward bad-tempered difficult stroppy absurd biased biassed contradictory foolish illogical inconsistent preposterous senseless silly stupid wrong all wet capricious erratic fallacious far-fetched full of hot air headstrong incoherent incongruous inconsequential invalid loose mad nonsensical off the wall opinionated quirky reasonless thoughtless unreasoned vacant

excessive exorbitant immoderate extravagant extreme unwarranted unnecessary unprovoked uncalled-for imbalanced out of all proportion unjust unfair illegitimate improper inordinate unconscionable undue unjustifiable unlawful wrongful absonant costing an arm and a leg dear extortionate far-out intemperate out of bounds overkill overmuch peremptory posh pricey steep stiff too great too much too-too unrightful unwarrantable up to here way out

pathologically