Open English Wordnet
Adjectives
(s)undue, unjustified, unwarrantedlacking justification or authorization“desire for undue private profit”, “unwarranted limitations of personal freedom”
(s)excessive, inordinate, undue, unreasonablebeyond normal limits“excessive charges”, “a book of inordinate length”, “his dress stops just short of undue elegance”, “unreasonable demands”