unconstitutional Meaning, Definition & Usage

  1. adjective not consistent with or according to a constitution; contrary to the U.S. Constitution

WordNet

Un*con`sti*tu"tion*al adjective
Definitions
  1. Not constitutional; not according to, or consistent with, the terms of a constitution of government; contrary to the constitution; as, an unconstitutional law, or act of an officer. Burke. -- Un*con`sti*tu"tion*al"i*ty n. -- Un*con`sti*tu"tion*al-ly adv.

Webster 1913