1. not performing normally, as an organ or structure of the body; malfunctioning.
  2. having a malfunctioning part or element: It is hard to get bills through a dysfunctional congress.
  3. behaving or acting outside social norms: All the siblings in their extremely dysfunctional family lost contact as adults.


  1. med (of an organ or part) not functioning normally
  2. (esp of a family) characterized by a breakdown of normal or beneficial relationships between members of the group

1917, from dysfunction + -al (1). Related: Dysfunctionally.

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