Dissident

Adjective

 * 1) In a manner that disagrees; dissenting; discordant; different.

Noun

 * 1) A person who formally opposes the current political structure, opposes the political group in power, opposes the policies of the political group in power, or opposes current laws.
 * 2)  One who disagrees or dissents; one who separates from the established religion.

Related terms

 * dissenter

Thesaurus
alienated, antagonistic, antiestablishment, antipathetic, apostate, at cross-purposes, at loggerheads, at odds, at odds with, at variance, at variance with, at war, bitter-ender, brawler, breakaway, clashing, colliding, conflicting, contentious, contradicting, contradictory, contrary, counter-culture, counteractant, counteracting, counteractive, countervailing, counterworking, cranky, cross, crotchety, defendant, demurrer, deviant, diehard, differing, disaccordant, disagreeable, disagreeing, discordant, discrepant, disharmonious, disproportionate, disputant, dissenter, dissentient, dissenting, dissonant, divergent, grating, heretic, heterodox, hostile, immiscible, in opposition, inaccordant, incompatible, inharmonious, inimical, intransigent, irreconcilable, jangling, jarring, last-ditcher, litigant, misbeliever, naysayer, negative, negativist, nonconformable, nonconforming, nonconformist, noncooperator, nonobservant, objector, obstructionist, obstructive, opinionist, opposer, opposing, opposition voice, oppositional, oppositionist, oppugnant, out of accord, out of whack, perverse, plaintiff, protestant, protester, protestor, quarreler, reactionary, rebel, recalcitrant, recusant, refractory, renitent, repugnant, resistant, resister, revolutionary, schismatic, scrapper, sectarian, sectary, separatist, unadaptable, unadjustable, uncompliant, unconforming, uncongenial, underground, unharmonious, unorthodox, unsubmissive, variant, wrangler