term:

Unconstitutional

unconstitutional adj

: contrary to or failing to comply with a constitution
;esp
: violative of a person's rights guaranteed by the U.S. Constitution [an search and seizure]
un·con·sti·tu·tion·al·i·ty [-tü-shə-na-lə-tē, -tyü-]
n

un·con·sti·tu·tion·al·ly adv

Source: Merriam-Webster's Dictionary of Law ©1996. Merriam-Webster, Incorporated. Published under license with Merriam-Webster, Incorporated.