dys-

Webster's Dictionary (1913)

An inseparable prefix, fr. the Greek δυς- hard, ill, and signifying ill, bad, hard, difficult, and the like; cf. the prefixes, Skr. dus-, Goth. tuz-, OHG. zur-, G. zer-, AS. to-, Icel. tor-, Ir. do-.

Webster’s Revised Unabridged Dictionary (1913), from GCIDE 0.54