Synonyms for Dun (same or very similar meaning)
WordNet sense 1 (a color or pigment varying around a light grey-brown color):
fawn, grayish brown, greyish brownWordNet sense 2 (treat cruelly):
bedevil, crucify, frustrate, rag, torment, tormentWordNet sense 3 (being or having or characterized by hue):
chromaticFrom the ODE community, based on WordNetadd/edit