unreasonable

adjectives

not reasonable; not showing good judgment
unreasonable
antonym
reasonable
is similar to
contrary to what common sense would suggest
counterintuitive
is similar to
(of theories etc) incapable of being defended or justified
indefensible, untenable
is similar to
not marked by the use of reason
"mindless violence"; "reasonless hostility"; "a senseless act"
mindless, reasonless, senseless
is similar to
lacking justification or authorization
"desire for undue private profit"; "unwarranted limitations of personal freedom"
undue, unjustified, unwarranted
see also
lacking in correct logical relation
illogical, unlogical
see also
beyond reasonable limits
"immoderate laughter"; "immoderate spending"
immoderate
see also
not consistent with or using reason
"irrational fears"; "irrational animals"
irrational
is an attribute of
goodness of reason and judgment
"the judiciary is built on the reasonableness of judges"
reasonableness
beyond normal limits
"excessive charges"; "a book of inordinate length"; "his dress stops just short of undue elegance"; "unreasonable demands"
excessive, inordinate, undue, unreasonable