The definition of dysfunctional is something that is flawed and doesn't operate correctly, or someone that deviates from normal and accepted social behavior.
An example of something that would be described as dysfunctional is a family that fights all the time and that deviates from the accepted way a family is supposed to behave.
Unable to function normally, properly, etc.
Of or characterized by abnormal or impaired psychosocial functioning.
A dysfunctional family, dysfunctional behavior.
Origin of dysfunctional
From dys- + functional.