an inseparable prefix, ·fr. the ·gr. / 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-.
DYS-
Meaning of DYS- in English
Webster English vocab. Английский словарь Webster. 2012