[icon.o.clast] n [ML iconoclastes, fr. MGk eikonoklastes, lit., image destroyer, fr. Gk eikono- + klan to break--more at clast] (1641) 1: one who destroys religious images or opposes their veneration
2: one who attacks settled beliefs or institutions -- icon.o.clas.tic adj -- icon.o.clas.ti.cal.ly adv