1. A trait or behaviour that is, or has become, more harmful than helpful to an organism's survival or reproduction
   "The peacock's elaborate tail is often cited as a potential maladaptation"
    
2. (psychology) ineffective or counterproductive coping mechanisms or behaviors in response to stress or change
   "His tendency to isolate himself during difficult times was a maladaptation that hindered his recovery"
    
3. (ecology) an adaptation that becomes harmful due to environmental changes, often caused by human activities
   "The polar bear's thick fur is becoming a maladaptation as Arctic temperatures rise due to climate change"

Derived forms: maladaptations

Encyclopedia: Maladaptation