Definition of undue :
1. 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.
2. Not due; not yet owing; as, an undue debt, note, or bond.
3. Not right; not lawful or legal; improper; as, an undue proceeding.
overweening, indefensible, intolerable, insupportable, overmuch, wild, excess, insane, towering, plethoric, unconscionable, overabundant, unwarranted, excessive, overly, overdue, unjustifiable, idle, inordinate, more, steep, over, exuberant, surplus, unwarrantable, unfounded, lavish, devilish, extravagant, unmerciful, groundless, baroque, not due, fancy, unjustified, exorbitant, too, hyper-, stiff, exceptional, unreasonable, overextravagant, immoderate, baseless, beyond
improper (part of speech: adjective)
- The operation should be undertaken within the first week or two, and great care must be taken to keep up the body- warmth, and to prevent undue loss of blood. - "Manual of Surgery Volume Second: Extremities--Head--Neck. Sixth Edition.", Alexander Miles Alexis Thomson.
- Wherefore this undue energy? - "Reviews", Oscar Wilde.
- Without undue delay the servant returned with a light cloak and the announcement that the ghari was in waiting. - "The Bronze Bell", Louis Joseph Vance.