unreasonable adj: not reasonable
: beyond what can be accepted: as
a : clearly inappropriate, excessive, or harmful in degree or kind [an delay] [an restraint of trade]
b : lacking justification in fact or circumstance [an inference]
: irrational [the agency decision was ]
c : not supported by a warrant or by a valid exception to a warrant requirement (as when there is reasonable suspicion) and therefore unconstitutional [the right of the people to be secure in their persons, houses, papers, and effects, against searches and seizures, shall not be violated "U.S. Constitution amend. IV"] see also search , seizure
Source: Merriam-Webster's Dictionary of Law ©1996. Merriam-Webster, Incorporated. Published under license with Merriam-Webster, Incorporated.