* Dysfunctional: Not working properly.
* Dyslexia: A learning disorder that impairs reading.
* Dyspepsia: Indigestion.
* Dysentery: An infection of the intestines.
* Dystopia: An imagined place or state in which everything is unpleasant or bad.
* Dysphoria: A state of unease or dissatisfaction.
* Dysplasia: Abnormal development of cells or tissues.
* Dyspnea: Difficulty breathing.
* Dysphonia: Difficulty speaking.
* Dysrhythmia: An abnormal heart rhythm.
The prefix "dys-" generally means "bad," "difficult," or "abnormal."