[1] : The Collaborative International Dictionary of English v.0.48

undue \undue"\, a.
   1. not due; not yet owing; as, an undue debt, note, or bond.
      1913 webster

   2. not right; not lawful or legal; improper; as, an undue
      proceeding. --bacon.
      1913 webster

   3. not agreeable to a rule or standard, or to duty;
      disproportioned; excessive; immoderate; inordinate; as, an
      undue attachment to forms; an undue rigor in the execution
      of law.
      1913 webster

   undue influence law, any improper or wrongful constraint,
      machination, or urgency of persuasion, by which one's will
      is overcome and he is induced to do or forbear an act
      which he would not do, or would do, if left to act freely.
      --abbott.
      1913 webster
see also:
undue influence 

Undue Influence >> U Words
Undue Influence, definition of term: Undue Influence
undue+influence_pag1.html

Undue >> U Words
Undue, definition of term: Undue
undue_pag1.html

Influence >> I Words
Influence, definition of term: Influence
influence_pag1.html