Synonyms of unreasonable in English:

unreasonable


See definition of unreasonable

adjective

1‘an unreasonable old woman’

SYNONYMS
uncooperative, obstructive, unhelpful, disobliging, unaccommodating, troublesome, awkward, contrary, difficult, tiresome, annoying, vexatious
obstinate, obdurate, wilful, headstrong, pig-headed, bull-headed, intractable, intransigent, inflexible, mulish
irrational, illogical, opinionated, biased, prejudiced, intolerant, blinkered

2‘the bill placed unreasonable demands on industry’

SYNONYMS
unacceptable, preposterous, outrageous, ludicrous, absurd, senseless, nonsensical, irrational, illogical
excessive, immoderate, extreme, disproportionate, undue, inordinate, exorbitant, extortionate, extravagant, intolerable, unconscionable
unnecessary, unjustified, unwarranted, uncalled for
informal over the top, OTT, steep