dun - noun

horse of a dull brownish grey color

a color or pigment varying around a light grey-brown color

dun - verb

• treat cruelly
• persistently ask for overdue payment
• cure by salting
• make a dun color

dun - adjective

• of a dull greyish brown to brownish grey color

dun - thesaurus

bedevil   crucify   fawn   frustrate   rag   torment