“+ adjective
Etymology: Middle English undewe, undue, from un- (I) + dewe, due due — more at due
1. : not due : not yet payable
an undue debt
an undue bond
2.
a. : unsuited to the time, place, or occasion : improper , inappropriate , inopportune
undue behavior
b. : exceeding or violating propriety or fitness : excessive , immoderate , unwarranted
desire for undue private profit — T.W.Arnold
his sartorial equipment stops just short of undue elegance — Philip Hamburger
3. archaic : contrary to justice, right, or law : unlawful